Maternal Serum Prenatal Screen, Second Trimester

Source	Blood
Mnemonic	MATSC
Specimen Requirements	1 x 5 mL light green (mint) top PST tube. Gold top SST tube is also acceptable. 2.0 mL heparinized plasma or serum
Specimen Handling	SUBMIT completed CLS Maternal Serum Prenatal Screen history form #CH3011.
Additional Information	Test includes: - Estriol, Unconjugated (E3) - Beta HCG, Quantitative - Blood - AFP Testing should be performed between 15 3/7 to 16 3/7 weeks gestation, not earlier. Timing for ultrasound not crucial as calculation takes date into account.
Testing Location	Immunochemistry
Testing Frequency	Weekdays
Alternate Name(s)	Alpha-1-Fetoprotein; Biochemical Screen; Downs Syndrome Maternal Triple Screen; Triple Screen, Downs Syndrome
Reference Interval

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