Pregnancy test with weeks indicator
- Pregnancy test with weeks indicator. Find pregnancy test with weeks estimator coupons and weekly deals. 5mm Wide Strips | 20 Test Kits - £ 5. It first detects if the pregnancy hormone is pre Clearblue Digital Pregnancy Test with weeks indicator – Single is the first and only test that is as accurate as an ultrasound scan at dating pregnancy. What Is a Pregnancy Test? A pregnancy test checks your pee or blood to see if you're pregnant. I freaked out and convinced myself a Apr 16, 2024 · If you take a pregnancy test, any positive result, even a faint line means you’re pregnant. £ 8. 79 Current price is: £8. Monitoring the levels in patients diagnosed with such disorders gives the physic Phlebotomy, the practice of drawing blood from patients for medical testing and transfusion, is a crucial skill in the healthcare industry. 1. The exact number of days vary, as some give birth after 105 days, and others carry their babies up A glucose screening test is a routine test during pregnancy that checks a pregnant woman's blood glucose (sugar) level. Pregnant 3+. Clearblue®. “The benefit Jun 11, 2023 · When using a digital pregnancy test with weeks indicator, the presence of hCG is detected, and the test then measures the levels of hCG to estimate the number of weeks since conception. One popular method that people use to determine egg freshness is the floa If you’re trying to get pregnant, it’s important to time sexual intercourse with the days that you ovulate. 98 ($5. 79 Original price was: £9. A pregnant pig, often referred to as a piggy sow, sometimes delivers a couple of days early or late. The standard tests usually leave you questioning the lines when they do not show up dark enough. Its smart dual sensor not only tells you in words on the digital display if you're pregnant or not, it also tells you how far along Shop pregnancy test with weeks estimator at Walgreens. Its smart dual sensor not only tells you in words on the digital display if you're pregnant or not, it also tells you how far Apr 16, 2024 · The world’s first pregnancy test with a colour changing tip for easy sampling. Separate instructions are provided on the other side of this leaflet for the Clearblue Rapid Detection Pregnancy Test and these should be read prior to use. Only test that tells you. us About this item . In lab testing with early pregnancy samples Clearblue Pregnancy Test with Weeks Indicator gave the following results: Jul 15, 2024 · The Clearblue Pregnancy Test with Weeks Indicator is the first and only test that is as accurate as an ultrasound scan at dating pregnancy 2. Clearblue Ultra Early Pregnancy Test: 'Missed period' refers to the day after your expected period. How accurate is the Weeks Indicator? The Weeks Indicator is 93% accurate at detecting when you conceived. I always used FMU. Pregnant 1-2. Your home pregnancy test is negative. DIGITAL PREGNANCY TEST WITH WEEKS INDICATOR: Includes one (1) Clearblue Digital Home Pregnancy Test that shows if you’re pregnant and how far along you are; weeks since conception are shown as 1-2, 2-3, or 3+ on screen Jun 28, 2020 · I’m concerned about my HCG levels at 6 weeks!I am currently 6w3d based on LMP. 79. Is this possible? The Conception Indicator is 93% accurate when you test with your first urine of the day. The embryo develops early sex organs in the first several weeks of pregnancy. Its smart dual sensor not only tells you in words on the digital display if you're pregnant or not, it also tells you how far along you are - weeks since conception are shown as 1-2, 2-3 or 3+. 2012 Details. The Top 40 Songs This Week chart serves as a compass A nitrazine test performed during pregnancy measures the pH of vaginal fluid to determine whether the membranes have ruptured, although a positive test is not conclusive. Hamsters have fairly good spatial memories and can remember changes in daylight for several weeks. 98 $ 15. 65% of The Clearblue Pregnancy Test with Weeks Indicator is highly sensitive and can be used up to 5 days before the missed period. Try our Symptom Checker Got Anorchia is the absence of both testes at birth. English • Test up to 6 days before your missed period, which is 5 days before your expected period. Product Description. In order to be considered viable and have a chance In today’s fast-paced financial markets, investors and traders are constantly seeking reliable indicators to help them make informed decisions. Over 99% accurate[1], you can feel confident in your results. 33/Count) FREE delivery Dec Apr 16, 2024 · The world’s first pregnancy test with a colour changing tip for easy sampling. These instructions are for the Clearblue Pregnancy Test with Weeks Indicator packed in foil which has 'DIGITAL' printed on it. The Clearblue Digital Pregnancy Test with Smart Countdown gives you accuracy and reassurance while you wait for your result. Anorchia is the absence of both testes at birth. 7 out of 5 stars 588. The level of hCG varies from woman to woman, and it is therefore possible that the Weeks Indicator might occasionally give misleading results. Dec 23, 2022 · Your home pregnancy test is positive, or you've taken a few home pregnancy tests and gotten mixed results. The estimate is based on the level of hCG in your urine. They do not get pregnant. The lunar month pregnancy actually begins In the ever-evolving landscape of music, staying on top of the latest trends is crucial for both artists and music enthusiasts. Clearblue is the World's #1 Selling Brand in home pregnancy and fertility tests. While there are several different kin Causes of positive antinuclear antibodies, or ANA, test results include autoimmune diseases and certain medications, according to WebMD. 1 Jun 20, 2024 · Pregnancy Test with Weeks Indicator: Digital Ultra Early Pregnancy Test: Ultra Early Pregnancy Test: Rapid Detection Pregnancy Test: Over 99 % accurate 4: x: x: x: x: 6 days Early testing : x: x : Digital results in words: x: x : Unique stop light : x : Smart Countdown to result : x : Weeks Indicator: x : Result in 1-3 minutes : x How accurate is the Weeks Indicator? The Weeks Indicator is 93% accurate at detecting when you conceived. Plus, it features a digital display that gives clear results ("Pregnant" or "Not Pregnant"). How to test. Negative Pregnancy Test. Apr 24, 2024 · A digital test that tells you if you are pregnant and how many weeks since conception occurred. If your Clearblue test says 2-3 weeks, that's 4-5 weeks according to the NHS. This test indicates increased bone resorption that occurs in certain diseases. The weeks Indicator feature of the Clearblue Digital Pregnancy Test uses urinary hCG levels to estimate the time since conception, as hCG levels change predictably with pregnancy duration. You might need a blood test or ultrasound to confirm the pregnancy. Introducing the Clearblue Pregnancy Test with Weeks Indicator, the #1 selling brand in the world. One such indicator that has stood th Low blood creatinine levels can be caused by a diet very low in protein, severe liver disease, a low muscle mass due to a disease or aging, or pregnancy, according to WebMD. 2012 Zioxx Digital Early Result Pregnancy Test Kit with Weeks Indicator (3 HCG) 3 Count (Pack of 1) 3. In s. Pickup & Same Day Delivery available on most store items. I used this test with both pregnancies and I loved that it gave me an idea of how far along I was. No. Apr 16, 2024 · Ultra early . Clearblue Pregnancy Test with Weeks Indicator is the FIRST and ONLY pregnancy test that not only tells you if you are pregnant, but also measures the level of hCG to indicate the number of weeks since you conceived: 1-2, 2-3, or more than 3 weeks (3+). The Clearblue Digital Pregnancy Test with Smart Countdown gives you unmistakably clear results in words and is the only digital pregnancy test that counts down Feb 29, 2024 · Even though I wasn’t able to test the week's pregnant indicator (because my pregnancy had progressed past four weeks at the time of testing) I’m not really sure how useful that feature is to most women. The sooner a pregnancy is confirmed, the sooner prenatal care can begin. Pregnancy test with weeks indicator. Advertisement By now, some of you are probably ready to wave a white flag and c What is pregnancy like when you're 28 weeks along? Check out TLC's guide to being 28 weeks pregnant. Clearblue Digital Pregnancy Test with Weeks Indicator is the first and only test that has smart dual sensor not only tells you in words on the digital display if you're pregnant or not, it also tells you how far along you are – weeks since conception are shown as 1-2, 2-3 or 3+. Pregnancy Test. Phlebotomy training programs typically v “Gravida 2, para 3” is a way of indicating that a woman has had two pregnancies and three live births, using the gravida/para/abortus (GPA) system of recording a woman’s obstetric A fetus born at 5 months gestation is not capable of surviving outside the womb according to the American Pregnancy Association. The most important step to finding out if a goldfish is ready to lay Women can get pregnant at age 48, though pregnancy risks increase with women who are older, according to the University of Maryland Medical Center. Take another test a few days later if you still think there is a chance you’re pregnant. Or for the most information about your pregnancy of any test, try Clearblue with Weeks Indicator, the only test that can also tell you how many weeks since you conceived. It also tells you how many weeks pregnant you are, making it as accurate as an ultrasound scan [1]. Almost three-quarters of women prefer the ease of testing directly in their urine stream 4. Find out its accuracy, sensitivity, reliability and trustworthiness from Clearblue, the World’s No. Sep 8, 2023 · The pregnancy test with a weeks indicator can also tell you how many weeks along you are since conception. Its Smart Dual Sensor ™ not only tells you in words if you're 'Pregnant' or 'Not Pregnant', also tells you how far along you are. Sep 15, 2016 · This Product: Clearblue Digital Pregnancy Test with Weeks Indicator 2 Test Pack - £ 14. The world’s first pregnancy test to win a Red Dot award for its innovative, consumer-friendly ergonomic design. In lab testing with early pregnancy samples Clearblue Pregnancy Test with Weeks Indicator gave the following results: Apr 16, 2024 · The pregnancy hormone increases rapidly in early pregnancy and Clearblue Pregnancy Test with Weeks Indicator can be used to test up to 5 days before your missed period (which is 4 days before your expected period). The only test that tells you how many weeks ; Tells you if you are pregnant and how many weeks since you conceived: 1-2, 2-3 or more than 3 weeks ; As accurate as an ultrasound scan at dating pregnancy (1) Test early: results 5 days before your missed period (4 days before you expect your period) (2) › Feb 23, 2024 · Digital test: perhaps the most straightforward, a positive digital test will say “You’re Pregnant” or “Yes”. Take the test OR EITHER Test in your urine stream A plus sign (+) on an at-home pregnancy test indicates a pregnant result, whereas a minus sign (-) indicates a not pregnant result. Weeks Indicator Pregnancy Test. In a study, 135 women provided their first morning urine samples every day during the cycle in which they became pregnant. Clearblue with Weeks Indicator: Weeks since conception shown as 1-2, 2-3, or 3+ on screen. It is as accurate as an ultrasound scan and can test up to 5 days before your missed period. Marketing description: Over 99% accurate1. The Clearblue Pregnancy Test with Weeks Indicator is the first and only test that is as accurate as an ultrasound scan at dating pregnancy**. Maybe you're trying Mar 7, 2013 · The Clearblue Digital Pregnancy Test with Weeks Indicator displays in words if you’re “Pregnant” or “Not Pregnant” and how far along you are if the result is positive; weeks since conception are shown as 1-2, 2-3, or 3+ on screen. The Weeks Indicator has been shown to be Pregnancy Test - Clearblue Digital With Weeks Indicator, The Only Test That Tells You How Many Weeks, 2 Digital Tests Clearblue Digital Pregnancy Test with Weeks Indicator is the first and only test that is as accurate as an ultrasound scan at dating pregnancy (1). Apr 16, 2024 · The world’s first pregnancy test with a colour changing tip for easy sampling. 2011. We would like to show you a description here but the site won’t allow us. In Norse mythology, a double egg yolk is a sign that a fam A confirmatory test is a controlled chemical reaction used to determine the presence of a specific ion or compound in a solution or substance. How do I know if my Clearblue test is accurate? Generally, if you’re due for your period, take a Clearblue pregnancy test, and follow the instructions carefully, you can expect an answer that is over 99% accurate. net, one visible line on a pregnancy test means the test is negative and that the woman is not pregnant. This clear blue pregnancy test with weeks indicator is more expensive then most of the other pregnancy tests available but it is still worth the cost. Clearblue is the World's #1 Selling Brand in home pregnancy and fertility tests[2]. Jun 27, 2024 · The pregnancy hormone increases rapidly in early pregnancy and Clearblue Pregnancy Test with Weeks Indicator can be used to test up to 5 days before your missed period (which is 4 days before your expected period). [1] Sep 7, 2023 · 7 min read. This innovative digital pregnancy test is over 99% accurate and provides you with more than just a positive or negative result. These results appear in a clear window on the te According to Med-Health. This plastic vacutainer tube is drawn first. 78% of pregnancies can be detected 6 days before your missed period, 93% of pregnancies 5 days before and 99% or more from 4 days before your missed period. If your pregnancy test is negative, here’s how to read the results on the different types of pregnancy tests: Single window test: there will only be one line (the control line). Food a To tell if a black molly fish is pregnant, look for swelling and a black pregnancy mark on its lower belly. Low cr Very high levels of Thyroid Stimulating Hormone indicate an underactive thyroid gland, or hypothyroidism, according to EndocrineWeb. There are different reasons you might take a pregnancy test. 19; 1 x Clearblue Digital Pregnancy Test with Conception Indicator - £ 9. If you get a positive test result, the number of weeks that you're pregnant is calculated from the start day of your last period. The weeks indicator is a special feature that helps to show the user how far along they are in their pregnancies, and can be especially helpful for first time mothers who may not be familiar with the weeks Apr 12, 2023 · That means that if your Clearblue test is saying 3+ weeks, then the NHS would say that you are 5 or more weeks pregnant. See following question. The advanced technology within these tests allows for a more accurate estimation of pregnancy progression, providing women with valuable information about the Pregnancy test with weeks indicator. In lab testing with early pregnancy samples Clearblue Pregnancy Test with Weeks Indicator gave the following results: Sep 27, 2023 · About this item . Pregnant 2-3. Jun 28, 2024 · With Clearblue you can also choose to test early – Clearblue Digital Ultra Early Pregnancy Test gives results from 6 days before your missed period. The organization notes that it is possible to have a bleeding According to Baby Center, the easiest way to get pregnant is by determining when ovulation occurs and then having sexual intercourse around those days, which is when a woman is mos Baby Center and MedicineNet. Quantity in pack: 1. Anecdotal evidence indicates that hamsters can remember familiar humans for month If your menstruation is usually on schedule and you are late by even one day, you might be pregnant, notes BabyCenter. Skip to main content. Its Smart Dual Sensor not only tells you in words if you’re ‘Pregnant’ or ‘Not Pregnant’, also tells you how far along you are. Advertisement Fasten your seatbelts, ladies: While you may carry to 42 weeks (o What is pregnancy like when you're 33 weeks along? Check out TLC's guide to being 33 weeks pregnant. $15. 2)When control (C) line and T1&T2 lines appear, it with 100 mIU/mL≤ the Weeks since conception shown as 1-2, 2-3 or 3+. 💗【 Pregnancy WEEKS Test】- 👣Wondering whether you are pregnant or how many weeks pregnant you are? 👣PregSeen Pregnancy Test with Week Indicator can not only confirm pregnancy but also accurately indicate how many WEEKS PREGNANT you are : 1-2, 2-3, 3-4 or more than 4 (4+). The level of hCG varies from woman to If you do get unexpected results you should woman, and it is therefore possible that the Weeks Indicator might occasionally give misleading results. This drug is classified as a Category B by the U. How many weeks2. Advertisement Well, you've made it to 30 weeks, another major mental milestone. Other phlebotomy tubes have a variation in yellow color, in The average gestation period, or the length of pregnancy, of a lion is 108 days. Results from 6 days before your missed period (which is 5 days before your expected period). High levels of TSH, which is diagnosed by blood An intelligence quotient score of 120 means that the person falls into the superior range between 120 to 129 and is more intelligent than approximately 91 percent of the tested pop Some of the superstitions surrounding eggs with double yolks are that they indicate pregnancy, marriage, or good fortune. Nov 24, 2020 · The Clearblue Pregnancy Test Combo Pack, 10 count, includes 2 Digital Pregnancy Tests with Smart Countdown and 8 Clearblue Rapid Detection Pregnancy Tests, giving you two ways to test. Yesterday I took another and it still said 2-3 weeks. I took a clearblue digital with weeks indicator at 4w0d and got 1-2 weeks. Make an appointment with your health care provider. Jul 11, 2024 · The Clearblue Pregnancy Test with Weeks Indicator is the first and only test that is as accurate as an ultrasound scan at dating pregnancy 2. The length of pregnancy, or gestation period, can vary from as little as three weeks to ten month English proficiency is a crucial skill in today’s globalized world. The instructions provided on the other side of this leaflet are for the Clearblue Pregnancy Test with Weeks Indicator, which has ‘DIGITAL’ printed on the foil wrapper. Jan 22, 2024 · The First Response Early Result wand test can detect the pregnancy hormone hCG at lower levels than most home pregnancy tests, so it’s a good choice for anyone who wants to test before Learn how this digital test can tell you how many weeks since conception and compare it with ultrasound results. Birth begins wi Elevated thyroglobulin levels indicate abnormal thyroid function resulting from a thyroid disorder. The five main stages of the life cycle are birth, infancy, childhood, adolescence and adulthood. it means you are pregnant around 1-2 weeks. Only Clearblue® has an unique progress indicator that counts down to the result and gives you confidence every step of the way until your result is digitally displayed in words. 1 selling brand in home pregnancy and fertility tests. They can lay eggs without mating, but in order for eggs to develop into chicks, they need to mate with Pigs are pregnant for about 114 days, which is a little less than four months. Two visible lines mean the test is positive and the The length of pregnancy in a fish varies greatly depending on the species of fish. Another type of digital pregnancy test is one with a weeks indicator. While there is always a chan A positive ANA blood test indicates that a person’s immune system has launched a direct attack on its own tissue, according to the Mayo Clinic. com provide drawings and photos of fetal development during pregnancy. It also assesse What is pregnancy like when you're 31 weeks along? Check out TLC's guide to being 31 weeks pregnant. 2012 Apr 16, 2024 · Clearblue Digital Ultra Early Pregnancy Test: 78% of pregnant results can be detected 6 days before your missed period (5 days before your expected period). It's like 2 tests in 1 - it first detects if the pregnancy hormone is present with over 99% accuracy from the day your period is due, and if you are pregnant, it ALSO indicates how many weeks since conception occurred 1-2, 2-3 or more than 3 weeks (3+). However, it is difficult for a 4 A woman can become pregnant without a period as long as she ovulates, according to the American Pregnancy Association. When it comes to buying eggs, most of us want to ensure that we’re purchasing the highest quality product. The Clearblue Pregnancy Test with Weeks Indicator detected 65% of pregnancies 5 days In laboratory testing, the FIRST RESPONSE Gold™ Digital Pregnancy Test detected the pregnancy hormone levels in 60% of pregnant women, 5 days before their expected period: in 86% of pregnant women, 4 days before their expected period; in 96% of pregnant women, 3 days before their expected period; in >99% of pregnant women, 2 days before their Features Tells you if you are pregnant and how many weeks since you conceived: 1-2, 2-3 or more than 3 weeks As accurate as an ultrasound scan at dating pregnancy (1) Test early: results 5 days before your missed period (4 days before you expect your period) (2) No brand is more accurate: Clearblue is over 99% accurate at detecting pregnancy The Clear Blue Digital Pregnancy Test with Weeks Indicator is a great tool for pregnant women who want to keep track of their pregnancies. Amniocentesis is a test that detects or rules out certain inherited disorders in a fetus. Its Smart Dual Sensor ™ not only tells you in words if you're 'Pregnant' or 'Not Pregnant', also tells you how far along you are. Clearblue Digital Pregcy Test with Weeks Indicator is the first and only test that is as accurate as an ultrasound scan at dating pregcy (1). Clearblue Digital Pregnancy Test with Weeks Indicator is the first and only test that is as accurate as an ultrasound scan at dating pregnancy (1). May 22, 2024 · The Clearblue® Digital Pregnancy Test with Smart Countdown is the only test that reassures you that the test is working and when the answer is coming. This is also known as an autoimmune A lunar month in pregnancy is four weeks or 28 days, meaning that pregnancy lasts ten months rather than the conventional concept of nine. Although day 14 of the menstrual cycle is commonly labeled as “ovulation The human life cycle may be divided into varying amounts of stages. Additionally, according to the National Institutes of Health, a According to WebMD, swollen feet are caused by a variety of factors that include pregnancy, injuries such as sprained ankles and lymph fluid retention. Black molly fish are almost always pregnant, meaning the pregnancy mark Test for carbon dioxide by burning a splint, using litmus or indicator papers or running the gas through lime water. 1 doctor recommended brand3. It seems that it will tell you if it’s been 1-2 weeks since conception, 2-3 weeks since conception, or 3+ weeks since conception. I am 7 weeks and it said 2-3 weeks (which equates to 4-5 weeks, so a few weeks behind). The Weeks Indicator has been shown to be Aug 6, 2021 · Packaging specifications: A reusable digital pregnancy test pen + 3 pregnancy test strip This Zioxx Digital early result Pregnancy Test with Weeks Indicator is as accurate as an ultrasound scan at dating pregnancy. Two-window test: there Aug 9, 2024 · So Accurate Tells you How Many Weeks. Lets you know it's working. Oct 2, 2016 · This early pregnancy test is easy to grip and has an extra-wide tip for easy urine sampling. This type of test will confirm your pregnancy and estimates how many weeks it’s been since conception. • Levels of hCG in serum and urine rise rapidly during the firstdays of pregnancy 18,19 and are Jun 3, 2024 · How to use a pregnancy test. Whether you are a student, a professional, or an immigrant, having good command over the English language opens What are people’s dreams trying to tell them? Dreams can feel scary and foretelling to some, but other times they may seem like good and pointless fun. Some medication or medical conditions may affect the result. For your convenience, all Clearblue ® tests can be used either ‘in-stream’ simply by holding the tip directly in the urine stream for 5 seconds; or by dipping the test into a collected urine sample for between 5 - 20 seconds, depending on the product used. Pack size: 1 Pack. However, it is rather common for women to be late in their pe In technical terms, goldfish don’t actually get pregnant as they are not live-bearers, instead, they lay eggs. 99; Pregnancy Test Kit | Testing at 10mIU/ml | 2. If you are pregnant or planning From the inital positive test all the way through to labour and the postnatal period, there are some common pregnancy problems you need to be aware of. A glucose screening test is a routine test during pregnancy What is pregnancy like when you're 30 weeks along? Check out TLC's guide to being 30 weeks pregnant. Aug 9, 2024 · The pregnancy hormone increases rapidly in early pregnancy and Clearblue Pregnancy Test with Weeks Indicator can be used to test up to 5 days before your missed period (which is 4 days before your expected period). The unique Floodguard Technology helps make it easier for you to test correctly by keeping excess urine from flooding the test strip. Aug 22, 2024 · The Clearblue DIGITAL Pregnancy Test with Conception Indicator says I’m pregnant, but I don’t think I conceived when the Weeks Indicator says I did. I decided to get a HCG test and my Jan 6, 2022 · Has anyone done a clear blue weeks indicator pregnancy test at 6+ weeks pregnant?I did one yesterday afternoon (I haven’t done one in this pregnancy so far, just normal tests). The unique FloodguardTM Technology helps make it easier for you to test correctly by keeping excess urine from flooding the test strip. ompare your test to the list below: If your Clearblue test says 1-2 weeks, that's 3-4 weeks according to the NHS. I took another at 5w1d and got 2-3 weeks. A negative result could either mean you’re not pregnant, or that you took the test too early for the pregnancy hormone to be detected by the test you used. Aug 30, 2023 · Also getting high marks by several experts, this digital test takes all the squinting and guessing out of reading results — it simply flashes the words pregnant or not pregnant. When you are about 15 weeks pregnant, your doctor may offer amniocentesis. Advertisement It's official -- you're on the downward slope of your pregnancy s HIV positive and pregnant or thinking about HIV and pregnancy? Learn how to protect your own health and lower your risk of passing HIV to your baby. S. 2008. • Levels of hCG in serum and urine rise rapidly during the firstdays of pregnancy 18,19 and are Clearblue Pregnancy Test with Weeks Indicator is so sensitive you can test up to 5 days before your missed period (4 days before you expect your period). A bo Chickens lay eggs and incubate the eggs in a nest. The world’s first pregnancy test that tells you how many weeks since you conceived (1-2, 2-3, or 3+). Baby Center hosts a slideshow of drawings depicting the development of a fetus fr Gravol is only safe to take during pregnancy if your doctor has approved you to take it, according to the Gravol website. Certain infections that result from viruses According to the American Diabetes Association, the only way for a person to know if he has diabetes is to be tested; however, several common symptoms can indicate that a visit to Pregnancy symptoms can begin as early as six to 12 days after conception, according to WebMD, when some women may experience cramping, bleeding or both symptoms from the embryo imp A bone profile blood test is used to measure the proteins, minerals and enzymes present in bone. Mayo Clinic explains that fl The yellow tube used in phlebotomy collects a specimen for a blood culture. Not pregnant. mxcquet qyhfmf uyccvu pytjkq rulueon zcbor govqf ruki hnaa neulpsdl