Methodology
Droplet Digital PCR (ddPCR)
Specimen Type
Whole Blood or Bone Marrow
Performing Lab
ARUP
Epic ID
Other Reference Test
Lab Test Days
Varies
Standard TAT
10-14 days
Collection Information
Specimen Required
5 mL whole blood or 3ml bone marrow
Container Type
Lavender EDTA
Collection Instructions
Green (sodium heparin) also acceptable
Processing Information - Lab Use Only
Transport Temperature
Refrigerated
Specimen Stability
Refrigerated=7 days
Rejection Criteria
Plasma, serum, FFPE tissue blocks/slides, or fresh or frozen tissue. Specimens collected in anticoagulants other than EDTA (purple) or sodium heparin (green). Clotted or grossly hemolyzed specimens.
Test Volume Required
5 mL blood or 3ml bone marrow
Minimum Test Volume
1 mL blood or bone marrow
Processing Instructions
Complete an ARUP requisition and submit with specimen refrigerated. Send with ARUP courier Monday-Friday.
Comments
Use to assess TPSAB1 copy number variants in the diagnosis of hereditary alpha-tryptasemia (HaT). Outpatients require insurance auth. Ok to draw on Inpatients.
CPT Codes
81479
Revised
5/9/26
Initials
IM