A 28-year-old female asked:
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i missed periods for 10 days i did urine and blood test and both came negative but i still miss my periods does the blod pregnancy test is accurate ?

2 doctor answers
Dr. Valerie Hines
16 years experience Pediatrics
Accurate HCG: The blood test is very accurate and starts to increase 3 weeks after you last menstrual period if you are pregnant. If you had it done 10 days after missing your period and it is normal that means you are not pregnant.
Answered on Dec 11, 2016
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Dr. Heidi Fowler
24 years experience Psychiatry
It should be: accurate at that point. Reasons for missed /late periods: low body weight, obesity, marked weight gain or loss, over-exercise such as in endurance athletes, breast-feeding, stress, illness, eating disorders (bulimia or anorexia), travel, hormone irregularities, drug use, medications (i.e., birth control) or med problem (polycystic ovary syndrome or Asherman’s syndrome. #1 reason is pregnancy.
Answered on Jul 6, 2018
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