Doctor insights on:
Blood Test For Hcg
Home pregnancy test was positive but blood hCG came back negative. Ob perform a blood test again. Hcg 750 progesterone 21. Why first hCG was negative?
Lab error: Presuming the first blood pregnancy test was close to the second, one of them had to be a lab error, probably the first one that was negative. If there is any question about the health of the pregnancy, your doctor can follow the bhcg level to see if it is rising appropriately and obtain an ultrasound when the level is high enough.For more info www.Askyourgynecologist.Org. ...Read more
Yes: Serum is the part of blood. It is the liquid part left when blood clots and is centrifuged . Many 'blood' tests, including beta HCG are done on serum. ...Read more
Can pregnancy blood test give false negative. 3 days late, urine test negative and blood test negative too?
I had a positive pregnancy test and a positive blood pregnancy then levels declined quickly. Then positive home test. Negative blood. Any suggestions?
See below: Return to your doctor for additional testing, if needed. ...Read more
How accurate is blood work to check for pregnancy? Had 3 home pregnancies test positive, & test in clinic negative. Waiting for blood work results.
Urine tests were positive for pregnancy last week. This week blood tests showed 14 hcg and urine test is negative. Is miscarriage 100% certain?
False negatives: All lab tests have a certain percentages of false negatives and positives. ...Read more
Hormone test: Human chorionic gonadotrophic hormone is generally increased in pregnancy and serves as the basis of pregnancy tests. Quantitative HCG tests also provide information about the health of the placenta. High HCG levels are also seen in some tumors of the ovary and testes. ...Read moreSee 1 more doctor answer