When to donate blood for hCG
A blood test for the hormone is given as needed. The first time it is prescribed directly during the diagnosis of pregnancy itself. The second is as part of screening with ultrasound and other tests. Screening is designed to identify pregnant women at risk for congenital pathologies of the fetus.
Approximate dates of hCG studies:
- Confirmation of pregnancy – from the 6th day after conception
- First – from 11 to 13 weeks
- Second from 19 to 23 weeks
- 3rd trimester screening is carried out after 28 weeks of pregnancy.