Test Information:
Free βhCG in combination with serum pregnancy‑associated plasma protein A (PAPP‑A) and the sonographic determination of nuchal translucency (NT) identifies women at an increased risk of carrying a fetus affected with Down syndrome during the first trimester (week 8‑14) of pregnancy.
Specimen Container:
Gold Top SST Tube (with clot activator) or Red Top Tube (Plain)
Specimen Type:
Serum
Required Volume:
2 mL
Patient Preparation:
No Patient Preparation
Notes:
N/A (Not Applicable)
Storage & Stability
(Before Processing)
- Storage: 2 to 8˚C
Stability: 8 days - Storage: 15 to 25˚C
Stability: 25 hours - Storage: -20˚C
Stability: 12 months
Transport Temperature:
Ref (2˚C – 8˚C)
Test Category:
Routine
Test Schedule:
Daily
Results Availability:
Within 4 Hours