A member asked:

Is bhcg measured from first day from last menstrual period? or day of conception ? if i am 5-6 weeks from lmp what expected level?

A doctor has provided 1 answer
Dr. John Munshower answered

Specializes in Family Medicine

NOT reliable: The B-HCG test is not reliable for determining age of the developing baby. The B-HCG Quantatative test is more for monitoring issues and assuring it is rising (or in the unfortunate case of a miscarriage, falling, etc.) The "Qualatative test will be either Positive or Negative, but as states the Quantataitve gives broad age ranges not used for or helpful in determining the age. US is best.

Answered 11/17/2014

3.5k views

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