Is blood pregnancy test accurate?

Patient's question:

No

Doctor's answer:

Blood test for pregnancy is accurate. Early pregnancy test strips also determine it based on HCG in urine. Pregnant women have HCG in both blood and urine, so can HCG in the blood be measured directly? Yes, so it is possible to check for pregnancy through a blood test. The test results show HCG values in the blood as 2, 5, and 4.27. Any value below normal should be considered as pregnancy.