About this test
Second-trimester (15–20 wk) screening for Down syndrome, Edwards syndrome and neural-tube defects.
Parameters
4 parameters available in the current test details.
- Attachment
- HCG
- AFP
- ESTRIOL, FREE
Sample & preparation
- Sample
- Serum
- Sample volume
- 2 mL
- Preparation
- As advised
- Transport temperature
- 2–8 °C
- Expected report time
- Next day
Confirm preparation and reporting time with OnePLUS when booking. Your referring clinician can advise which investigation is appropriate.