Preclinical Pregnancy -- An early loss that ends before the next period is due. There are usually no pregnancy symptoms, but a blood test can reveal small amounts of the pregnancy hormone HCG. Also called Chemical Pregnancy.
Preclinical Pregnancy (biochemical pregnancy): Evidence of conception based only on biochemical data in serum or urine before ultrasound evidence of a gestational sac.
See also: Menstrual period, Infertility, Pelvic organs, Ovulation, Oxygen
 
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