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Test Code AFP TRIPLE AFP TRIPLE TEST (MATERNAL)

Methodology

Immunoassay Antibody Detection

Includes AFP, chorionic gonadotropin, and estriol.

Useful for prenatal screening for neural tube defect and Down syndrome.

Specimen Requirements

Container/Tube: Plain, red-top tube(s) or serum gel tube(s)

Specimen Volume: 3 mL (minimum volume: 2 mL) of maternal serum

Collection Instructions:

  1. Gestational age must be between 15 and 22 weeks; 16 weeks is optimal, 16 to 18 weeks is second choice.
  2. Ultrasound dating of pregnancy is preferred.

Forms: “Shodair Children’s Hospital Second Trimester Maternal Serum Screening Requisition”

See “Requisitions” in Special Instructions for a copy of the form.

Day(s) Test Set Up

Tuesday, Thursday

Reference Values

An interpretive report will be provided.

All abnormal results are called to the attending physician on the day of testing, and are faxed upon request. Written reports are mailed.

Performing Laboratory

Shodair Children's Hospital, Helena

Test Classification and CPT Coding

82105-AFP

82677-Estriol

84702-Chorionic gonadotropin

Specimen Transport Temperature

Refrigerate/Frozen NO/Ambient NO

Special Instructions