2 doctors weighed in:

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

2 doctors weighed in
Dr. David Fein
Preventive Medicine
1 doctor agrees

In brief: 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.

In brief: 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.
Dr. David Fein
Dr. David Fein
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