is it possible to have low hcg levels at 5 weeks?
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A normal pregnancy may have low hCG levels and result in a perfectly healthy baby. The results from an ultrasound after 5 -6 weeks gestation are much more accurate than using hCG numbers.
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This is because ordinarily, in early pregnancy, the hCG level in your blood doubles every two to three days. If your hCG doubling time is slower than expected, or if it decreases over time, this may be a sign of a miscarriage or an ectopic pregnancy.
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hCG blood levels. Low levels of hCG may be detected in your blood around 8 to 11 days after conception. hCG levels are highest towards the end of the first trimester, then gradually decline over the rest of your pregnancy.
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How HCG works as a pregnancy test. Many women have very low levels of HCG in their blood and urine when they are not pregnant. HCG tests detect elevated levels. Tests may not detect pregnancy until HCG has risen to a certain level.
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A slow rate of rise or a drop in HCG levels during the first 8 to 10 weeks of pregnancy represents death of trophoblastic tissue and can indicate ectopic or nonviable intrauterine pregnancy.
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If the embryo does in fact implant and begin to grow, hCG levels will rise and the line should get darker." hCG levels are abundantly present two to three days after your missed period (15 to 16 days after ovulation), so if you have a faint line, wait until after your missed period to test.
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It's common to see some spotting at five weeks pregnant, but there should be no more than a few drops of blood — not even enough to cover a small pantyliner. This is likely just implantation bleeding, but you'll want to mention it to your doctor so that he or she can rule out complications.
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Generally, below-normal levels of TSH indicate hyperthyroidism. However, low TSH levels may also occur in a normal pregnancy, especially in the first trimes- ter, due to the small increase in thyroid hormones from HCG.
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It can take several days for HCG levels to rise high enough for a test to detect the hormone. Due to how long it takes for HCG levels to rise, it is possible for a woman to be pregnant and still get a negative test. A positive result usually appears after retesting a few days later. False-positive results are rare.
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Many women have very low levels of HCG in their blood and urine when they are not pregnant. HCG tests detect elevated levels. Tests may not detect pregnancy until HCG has risen to a certain level. This requirement means tests that detect lower levels of HCG may diagnose pregnancy earlier.
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High or low hCG levels could still indicate a normal pregnancy. Doctors can, however, gain information from looking at trends. A normal pregnancy has hCG levels that double every 48 hours, and hCG levels usually peak around 90-100,000 mIU/mL, says Dr. Lang.
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If your hCG levels fall below the normal range, it's not necessarily a cause for concern. Many women have gone on to have healthy pregnancies and babies with low hCG levels. Most women don't ever have cause to find out what their hCG levels are specifically.
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A rate of decline that is slower than 21 to 35% in 48 hours suggests the presence of retained trophoblastic tissue or ectopic pregnancy and indicates the need for intervention to achieve a definitive diagnosis. There is no single "normal" hCG level in early pregnancy.
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When low hCG levels are detected, it's often because a pregnancy that was thought to be between 6 and 12 weeks is actually not that far along. An ultrasound and further hCG tests can be used to calculate the gestational age correctly. This is usually the first step when low hCG levels are detected.
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In general, however, if the hCG levels are dropping in the first trimester, this probably is a sign of impending miscarriage. On the other hand, slow-rising hCG levels that do not double every two or three days in early pregnancy may be a sign of problems, but can also occur in a normal pregnancy.
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Typically, hCG declines over a period ranging anywhere from 9 to 35 days. The average time frame is around 19 days. Taking a pregnancy test within that period can result in a false-positive test.
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It is commonly expected that HCG levels will double over 48 hours during the first trimester of a normal pregnancy. There is wide variation in HCG levels, however, particularly late in the first trimester and with values greater than 5000 IU/L.