Methodology
Droplet Digital PCR (ddPCR)
Specimen Type
blood
Performing Lab
ARUP
Epic ID
Other Reference Test
Lab Test Days
Varies
Standard TAT
10-14 days
Collection Information
Specimen Required
5 mL blood
Container Type
Lavender EDTA
Processing Information - Lab Use Only
Transport Temperature
Refrigerated
Specimen Stability
Refrigerated=7 days
Rejection Criteria
Plasma, serum, tissue. Specimens collected in anticoagulants other than EDTA or sodium heparin. Clotted or grossly hemolyzed specimens.
Test Volume Required
5 mL blood
Minimum Test Volume
1 mL blood
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
9/26/25