Maternal Screening, Sequential, Specimen #2, Alpha Fetoprotein, hCG, Estriol, and Inhibin A MSCR2
Method(s) | Quantitative Chemiluminescent Immunoassay |
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Specimen Required | |
Collect | One 5 mL gold (SST) or plain red top tube. |
Transport | Separate from cells ASAP or within 2 hours of collection. Transfer 3 mL serum refrigerated to an ARUP Standard Transport Tube. (Min: 1 mL) |
Remarks | Requires that a previous first trimester specimen, Maternal Screening, Sequential, Specimen #1, hCG, PAPP-A, NT (ARUP test code 3000146), has been performed. |
Stability | After separation from cells: Ambient: 72 hours; Refrigerated: 2 weeks; Frozen: 1 year (avoid repeated freeze/thaw cycles). |
Unacceptable Conditions | Plasma, Hemolyzed specimens. |
Schedule | Daily |
Billing Code | 5011813 |
CPTCode | 81511 |
Notes | See attached required requisition and patient consent. Patient Prep: 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. |
Preferred Specimen Collection Device(s) | |