Fetal genetic tests: maternal blood chemistry, fetal ultrasound, chorionic villus sampling, amniocentesis, cardocentesis, NIFTY. We present a summary of prenatal tests available in Poland using invasive and non-invasive methods. In which week of pregnancy should fetal genetic testing be done?
| Method | Invasive / Non-invasive | Fetal age | Description |
| Maternal blood chemistry | Non-invasive |
11-13 week, week 14-20 |
False positive 5% Detectability 60% -80% |
| Fetal ultrasound | Non-invasive | 11-13 week |
False positive 5% Detectability 60% -80% |
| CVS | Invasive | 10-13 week |
Risk of miscarriage 1% -2% Detectability greater than 99% |
| Amniocentesis | Invasive | week 16-21 |
Risk of miscarriage 0.5% -1% Detectability greater than 99% |
| Cardocentesis (PUBS) | Invasive | week 20-28 |
Risk of miscarriage 1% -2% Detectability greater than 99% |
| NIFTY | Non-invasive | 12-24 week |
No risk of miscarriage False positive results below 1% Detectability greater than 99% |