Updated Test

Effective Date

10/20/2025

Notes

Update to specimen requirements, alternate specimen, stability, and turnaround time

Transport Temperature:

Frozen
Bone Marrow: Refrigerated
Paraffin Embedded Tissue: Room temperature

Alternate Specimen: Serum separator tube (SST), CSF, amniotic fluid, bone marrow, synovial fluid and Pink (K2EDTA). Tissue (freeze immediately) and paraffin embedded tissue block.

Stability:

Serum and Plasma:
Room temperature: 24 hours
Refrigerated: 5 days
Frozen: 6 months

Bone Marrow:
Room temperature: 7 days
Refrigerated: 7 days
Frozen: 7 days

Fresh tissue:
Room temperature: Unacceptable
Refrigerated: Unacceptable
Frozen: 6 months

Paraffin-embedded tissue:
Room temperature: Indefinitely
Refrigerated: Indefinitely
Frozen: Unacceptable

Turnaround Time: 3 – 6 days

Test Details

Mnemonic

PB19

Ordering Code

3688400

CPT-4 Codes(s)

87798