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A 39-year-old member asked:

I had a blood bhcg 18 and when i did the urine test, it was neg; what does that mean?

1 doctor answer2 doctors weighed in
Dr. David Fein
Specializes in Preventive Medicine
Still positive: Most urine pregnancy tests cannot measure HCG levels in the urine below 25 or 30 units. Also, if the urine was not your first morning urine, and therefore, wasn't concentrated, the HCG could also have been diluted to the point where it was not measurable.

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Last updated Mar 30, 2016


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