A 29-year-old female asked:
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is it true that the qualitative blood hcg test is as good as a urine test? it only tests positive with a 25mlu?

2 doctor answers
Dr. David Miller
9 years experience Family Medicine
Yes: It is just as good. You typically don't need much blood (or urine, for that matter) for most tests these days.
Answered on Dec 9, 2013
Dr. Chevies Newman
21 years experience Obstetrics and Gynecology
Probably close: The modern upt is very sensitive. 25mlu is very low, like just after implantation ( i'm not sure how long but just a couple of days. I recommend people skip the period before the upt, however. Otherwise you can be chasing it too hard causing extra stress. Pregnancy rates are about 10-20% per month; good luck with everything.
Answered on Dec 27, 2012
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Recheck blood: You need to have the blood levels checked again. You expect the level to about double in 2 days with a normal pregnancy.
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