March 13, 2009
Women wonder what they mean and if their numbers are normal, good etc
I found this and thought I would share:
Guideline to hCG levels during pregnancy:
hCG levels in weeks from LMP
(gestational age)* :
* 3 weeks LMP: 5 - 50 mIU/ml
* 4 weeks LMP: 5 - 426 mIU/ml
* 5 weeks LMP: 18 - 7,340 mIU/ml
* 6 weeks LMP: 1,080 - 56,500 mIU/ml
* 7 - 8 weeks LMP: 7, 650 - 229,000 mIU/ml
* 9 - 12 weeks LMP: 25,700 - 288,000mIU/ml
* 13 - 16 weeks LMP:13,300 - 254,000mIU/ml
* 17 - 24 weeks LMP:4,060 - 165,400 mIU/ml
* 25 - 40 weeks LMP:3,640 - 117,000 mIU/ml
* Non-pregnant females: <5.0 mIU/ml
* Postmenopausal females: <9.5 mIU/ml
These numbers are just a GUIDELINE-- every woman’s level of hCG can rise differently. It is not necessarily the level that matters but rather the change in the level.
Key things to remember about hCG levels:
* In a bout 85% of normal pregnancies, the hCG level will double every 48 - 72 hours. As you get further along in pregnancy and the hCG level gets higher, the time it takes to double can increase to about every 96 hours.
* Caution must be used in making too much of hCG numbers. 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.
* An hCG level of less than 5mIU/ml is considered negative for pregnancy, and anything above 25mIU/ml is considered positive for pregnancy.
* The hCG hormone is measured in milli-international units per milliliter (mIU/ml).
* A transvaginal ultrasound should be able to show at least a gestational sac once the hCG levels have reached between 1,000 - 2,000mIU/ml. Because levels can differentiate so much and conception dating can be wrong, a diagnosis should not be made by ultrasound findings until the hCG level has reached at least 2,000.
* A single hCG reading is not enough information for most diagnoses. When there is a question regarding the health of the pregnancy, multiple testings of hCG done a couple of days apart give a more accurate assessment of the situation.
* The hCG levels should not be used to date a pregnancy since these numbers can vary so widely.
* There are two common types of hCG tests. A qualitative hCG test detects if hCG is present in the blood.A quant hCG test (or beta hCG) measures the amount of hCG actually present in the blood.
Hope everyone finds this helpful
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