Table 5 The USA hCG Reference Service experience, 1997 – 2008 with 319 cases with persistent low positive hCG in the absence of pregnancy or history of gestational trophoblastic disease or other malignancy.
From: New discoveries on the biology and detection of human chorionic gonadotropin
Source of hCG | Menopause Ages > 50 | Perimenopause Ages > 40 | Menstrual Ages 18 – 40 |
|---|---|---|---|
Pituitary hCG | 43 | 60 | 9 |
Non-trophoblastic neoplasm | 0 | 2 | 9 |
Gestational trophoblastic neoplasm | 0 | 2 | 10 |
False positive hCG test | 1 | 8 | 82 |