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HelpTest Code AFP plus Quad Prenatal Request - AFP plus Quad
Specimen Type
Blood
Container Type/Storage
Red top tube
Minimum Requirement
5-7 mL
Special Handling
2nd trimester serum test including AFP, Estriol, HCG and Inhibin for screening for open neural tube defects, Down Syndrome (Trisomy 21) and Trisomy 18.
May be done between 15 and 22 weeks of gestation. 16 to 18 weeks of gestation is optimal.
Routine Turnaround Time
2-3 days from receipt
Methodology
Immunoassays
Reference Range
Positive Screen for Open Neural Tubal Defects:
greater than or equal to 2.0 MoM
Screen Positive for Down Syndrome greater than or equal to risk of 270
Screen Positive for Trisomy 18 greater than or equal to 100
CPT Code
82105
82677
84702
86336