Maternal Serum Screening-First Trimester consists of PAPP-A and Free Beta-HCG.

Specimen Container	Gel separator tube (Adult)
Specimen Requirement	Plain blood 3 mL Invert blood 5 times after blood collection ensures the clot-activating factors is well mixed with the blood. This will ensure results are reliable.
Orderable as Urgent?	No
Turn Around Time	Up to 3 days
Testing Laboratory Location	KKH
Laboratory	Clinical Chemistry
Contact Number	6394 8013
Day and Time Performed	Mon – Fri: 0800 hrs– 1700 hrs
Orderable on CPOE?	No
Downtime Form	ADC-0022
Additional Information	1) Laboratory only accepts specimen from pre-approved locations by ADC. 2) Patient counselling must be done before specimen collection.

Change History Notes

Last Updated - 19 Jun 2025