Reference :Am I Pregnant? | Taking a Home Pregnancy Test
What is hCG?
hCG is one of the major pregnancy hormones. hCG signal sometimes called the “rescue of the corpus luteum.”
Every woman has low levels of hCG, literally less than 5 IU/mL, when not being pregnant, but not in significant quantities. If you did not get pregnant, you would not see a positive pregnancy test because hCG levels would be too low for detection.
When hCG levels rise to be more than 25 IU/mL, it is considered significantly higher than the baseline, and you are considered pregnant.
Since hCG is produced by pregnant women’s placenta, hCG is also called the pregnancy hormone. Usually, the test can detect hCG level in your urine about 10 days after your first missed period. Normally, during the first 8 to 10 weeks of pregnancy, hCG levels increase rapidly. HCG can be detected after implantation. If the test is performed during the very early stages of pregnancy, it could fail.
Pregnancy test: Indicative markers are found in blood and urine. Human chorionic gonadotropin (hCG) was found in 1930 to be produced by the syncytiotrophoblast cells of the fertilised ova (eggs).
相關字：早孕試紙。家用早孕檢測。尿液樣本。相關字：測量無效(Invalid)：檢測窗(T)、對照窗(C)驗孕試劑盒。hGC檢查。hCG levels。 Pregnancy Hormone, missed period, symptoms of pregnancy
corpus luteum 中文：黃體
uterine lining 中文：子宮內膜