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Quantitative hCG (B-HCG) Test

Quantitative hCG (B-HCG) Test

Human chorionic gonadotropin (hCG) is a hormone produced by the placenta of a pregnant woman. Early in pregnancy, the level of hCG increases in the blood and is eliminated in the urine. A pregnancy test detects hCG in the blood or urine and confirms or rules out pregnancy.

During the early weeks of pregnancy, hCG is important in maintaining function of the corpus luteum. Production of hCG increases steadily during the first trimester (8-10 weeks) of a normal pregnancy, peaking around the 10^th week after the last menstrual cycle. Levels then fall slowly during the remainder of the pregnancy. hCG is no longer detectable within a few weeks after delivery.

When a pregnancy occurs outside of the uterus (ectopic), the level of hCG in the blood increases at a slower rate. When an ectopic pregnancy is suspected, measuring the level of hCG in the blood (quantitative test) over time may be useful in helping to make a diagnosis of ectopic pregnancy.

Some signs and symptoms of ectopic pregnancy include:

• Abnormal vaginal bleeding—because a woman is pregnant, she may not have a regular period but then may have light bleeding or spotting with an ectopic pregnancy
• Low back pain
• Pain or cramping in the lower abdomen or on one side of the pelvis

If untreated, signs and symptoms may get worse and may include:

• Dizziness, weakness
• Feeling faint or fainting
• Low blood pressure
• Pain in the shoulder area
• Sudden, sharp pain in the pelvic area
• Fever, flu-like symptoms
• Vomiting

The area around an ectopic pregnancy may rupture and start to bleed, and, if undiagnosed, can lead to cardiac arrest and death.

Sample :

a urine sample is collected first thing in the morning or a blood sample is drawn from a vein in the arm.

Normal Range :

Pregnant over 30.0 IU/ml.

Quantitative hCG (B-HCG) Test

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