Beta-hCG Test Flashcards
1
Q
In a normal intrauterine pregnancy, beta-hCG levels double every ____ days during the first 6 weeks of pregnancy.
A
2-3
2
Q
Qualitative urine or serum tests test for _____________________.
A
presence or absence of beta-hCG
3
Q
All pregnancy tests are based on detection of ________, which is secreted by the _________ after the ovum is fertilized and implants in the endometrium.
A
beta-hCG; trophoblast
4
Q
Why do we test for beta-hCG in particular?
A
The alpha subunit is the same for other glycoprotein hormones, including FSH, LH, and TSH. The beta subunit is unique for hCG.
5
Q
_____ and _____ can be used for qualitative hCG assays.
A
Urine and serum
6
Q
______ can be used for quantitative beta-hCG assays.
A
serum
