If you are pregnant, very high levels of human chorionic gonadotropin (hCG) can mean a multiple pregnancy (such as twins or triplets), a molar pregnancy, Down syndrome, or that you are further along in an early pregnancy than estimated by your last menstrual period (LMP).
In a man or a nonpregnant woman, a high hCG level can mean a tumor (cancerous or noncancerous) that develops from a sperm or egg cell (germ cell tumor), such as a tumor of the testicles or ovaries, is present. It may also mean some types of cancer, such as cancer of the stomach, pancreas, large intestine, liver, or lung.
If you are pregnant, low levels of hCG can mean an ectopic pregnancy, death of your baby, or that you are not as far along in an early pregnancy as estimated by your last menstrual period (LMP).
If you are pregnant, levels of hCG that are decreasing abnormally can mean a miscarriage (spontaneous abortion) is very likely.
What Affects the Test
Things that may affect the results of your test include:
Doing a urine test for human chorionic gonadotropin (hCG) very early in pregnancy (during the first week after implantation) or on a urine sample taken in the middle of the day. The test may not always show an early pregnancy.
Miscarriage (spontaneous abortion) or therapeutic abortion. HCG results may remain high (positive) for up to 4 weeks after a miscarriage or therapeutic abortion.
Getting an injection of hCG to treat infertility. This may cause test results to appear high for several days after the injection.
Having blood in the urine sample or soap in the collecting container, which may change the hCG level.
Using heparin, a medicine to prevent blood from clotting (anticoagulant).
Using some medicines. These include hypnotics (such as Ambien), antipsychotics, and antinausea medicines (such as prochlorperazine and promethazine ). Be sure to tell your doctor what medicines you take.