Maternal Serum Screen, Alpha Fetoprotein, hCG, Estriol and Inhibin A (Quad)
Abbrev Code: | MQMK | ||
Order Code: | LAB3619 | Order Name: | Maternal Quad Marker 2nd Trimester |
Synonyms: | Maternal Quad Marker; AFP; MQMK; Alpha Fetoprotein; hCG; Estriol and Inhibin | ||
Methodology: | Quantitative chemiluminescent immunoassay | ||
CPT Codes: | 81511 x1 | ||
Turnaround Time: | Specimens are sent to reference laboratory Mon-Sun; results are reported in 2-3 days. | ||
Special Instructions: |
Second trimester screening test for trisomy 21 (Down syndrome), trisomy 18 and open neural tube defects.
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Associated Links: |
Collection Instructions
Specimen: | Blood |
Optimal Volume: | 6 mL |
Minimum\Peds Volume: | 2.2 mL |
Container: | Red or gold (gel) Alternate Containers: Red (no gel) |
Collection Instructions: | Send to the laboratory immediately after collection. |
Patient Preparation: | Specimen must be drawn between 14 weeks, 0 days and 24 weeks, 6 days gestation. The recommended time for maternal serum screening is 16 to 18 weeks gestation. |
Causes for Rejection: | Plasma; hemolysis |
Processing and Shipping
Specimen Processing: | Centrifuge within 2 hours of collection; aliquot 3 mL, 1 mL minimum. Store refrigerated. |
Shipping Instructions: | Ship at refrigerated temperature. |
Stability: | 72 hours at room temperature; 2 weeks refrigerated; 1 year frozen. Avoid repeated freeze/thaw cycles. |
Test Performed at or Referral Lab | Lab Sendouts (ARUP) |
Referral Lab number: | 3000143 |
Interpretive
Reference Range: | By report. |
Use: | This test is used to screen for fetal risk of Down syndrome (trisomy 21), trisomy 18, and Open Neural Tube Defect (ONTD, spina bifida). |
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