Test directory: AFP Maternal, Screen (NTD only)

Ordering Code298
Test NameAFP Maternal, Screen (NTD only)
AliasAFP Maternal, Screen (OSB only)
MSAFP (NTD only)
AFP Maternal, Screen (Neural Tube Defect only)
AFP Maternal Screen (Open Spina Bifida only)
Preferred SpecimenSerum
Preferred ContainerSST (Gold)
Other Specimen/ContainerSerum in Plain (Red)
Optimum Volume2 mL
Collection InstructionsPatient should be between 15 - 20 weeks gestation.
Transport RequirementsOahu: Refrigerated
Airline: Frozen
Specimen StabilityAmbient: 8 Hours
Refrigerated: 2 Days
Frozen: 6 Months
Frozen samples should be thawed only once. DO NOT use frost-free freezers.
Rejection CriteriaSpecimen older than stability limits, Grossly hemolyzed,
Insufficient quantity
Avail. StatNO
Analytic Time1 Day
MethodologyChemiluminescence

Reference range(s)

The reference ranges listed below are valid on this date of November 21, 2024.
ComponentAgeMale NormMale Critical LowMale Critical HighFemale NormFemale Critical HighFemale Critical LowUnitsAdd'l info
Gestational AgeALLWks.See report.
G.A. Based OnALLSee report.
Age At TermALLYrs.See report.
WeightALLlbs.See report.
RaceALLSee report.
GestationALLSee report.
Insulin Dependent DiabeticALLSee report.
Smoking StatusALLSee report.
Repeat testALLSee report.
FH of NTDALLSee report.
AFPALLng/mLSee report.
MOMALL<2.5
NTD Risk AssessmentALLSee report.
NTD Screen RiskALL<1:484
InterpretationALLSee report.