4 doctors weighed in:
Is it possible to get a negative blood pregnancy test if you're actually pregnant?
4 doctors weighed in

Dr. Gary Snead
ADHD & Autism
3 doctors agree
In brief: Yes, but not likely
For the first week after fertilization and for about 2 days after implantation, it is likely there will not be any measurable change in hcg, the hormone triggered by implantation.
That time frame is shorter than the time it usually takes for anyone to suspect they are pregnant and have a blood test. The urine, hct, test often is not positive until days after the blood test is positive.

In brief: Yes, but not likely
For the first week after fertilization and for about 2 days after implantation, it is likely there will not be any measurable change in hcg, the hormone triggered by implantation.
That time frame is shorter than the time it usually takes for anyone to suspect they are pregnant and have a blood test. The urine, hct, test often is not positive until days after the blood test is positive.
Dr. Gary Snead
Dr. Gary Snead
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