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can blood test detect pregnancy before missed period

A 28-year-old female asked:
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 m ... Read More
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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 ath ... Read More
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1 thank

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A 23-year-old female asked:
Dr. Gerard Honore
28 years experience Fertility Medicine
Same day: You can wait longer but a serum (blood) test is reliable even a day or two before the expected missed period.
A 38-year-old member asked:
Dr. Joel Rivera Jimenez
17 years experience Obstetrics and Gynecology
Pregnancy: Great majority of pregnancies occur when coitus takes places within the 3 day interval just prior to ovulation. The first hormonal evidence of implant ... Read More
A 17-year-old female asked:
Dr. Robert Killian
27 years experience General Practice
Pregnancy testing: The bigger question is is the test done at least fourteen days after the possible conception. If it is less than fourteen days then it is not too accu ... Read More
A 34-year-old female asked:
Dr. Magdala Beauvil
Specializes in Obstetrics and Gynecology
Recheck: <5 IU in Most blood test is a negative test. But because you took test before you actually missed a period I would repeat another blood test after ... Read More
A 22-year-old female asked:
Dr. Jeff Livingston
21 years experience Obstetrics and Gynecology
About zero: The chances of a false negative blood test two weeks after missing your menstrual cycle are just slightly less than zero.
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A 18-year-old female asked:
Dr. Robert Kwok
32 years experience Pediatrics
Sometimes, but...: That is very early, so often the test will still be negative, and one will end up retesting. Patience is a vital virtue for any aspiring parent-to-be. ... Read More
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A 21-year-old female asked:
Dr. Robert Killian
27 years experience General Practice
You are not pregnant: Five tests cannot be wrong. You are not pregnant. There are a dozen common reasons for missed periods. Perhaps you should learn about that and stop ... Read More
A 26-year-old female asked:
Dr. Larry Xanthopoulos
21 years experience Pediatrics
All 3 positive?: I would call your doctor and set an appointment. Urine pregnancy tests are pretty accurate. In order to have a serum hcg you need to see the doctor
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A 20-year-old female asked:
Dr. Gurmukh Singh
48 years experience Pathology
May be: The blood test was probably done too soon to be meaningful. You may do a home pregnancy test now or see your doctor for a repeat blood test and ultras ... Read More
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4 thanks

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