Test ID: ZH393
CPT code: 86336, 84702, 82105, 82677
LOINC:
Specimen Type: SST
Frequency: 2 – 5 days
Instructions: 5 mL Serum from SST, Ambient. Min 3 mL.
Text: Screening test for open neural tube defects (detects 80% open spina bifida, 90% anencephaly), Down syndrome (detects 75% to 80%), and trisomy 18 (detects 73%). A positive AFP tetra result means that more diagnostic testing may be offered to the pregnant woman to determine if a neural tube defect or chromosome abnormality is present.
Methodology: Chemiluminescent immunoassay