Ordering Recommendations

If reflex to CALR is selected, testing will proceed to CALR upon a Negative JAK2 V617F result. 

Collect

Heme samples : one 5 mL blood in EDTA (lav top), or one 3 mL bone marrow in EDTA (min 0.5mL or >100K nucleated cells

Storage/Transport Temperature

Several hours ambient is acceptable.  Do not freeze

Stability (from collection to initiation)

Ambient: 72 hours; Refrigerated: 1 week; Frozen: Unacceptable

Test Barcode Number

42253

ARUP Test Code

0051245

Lab Section

Molecular Diagnostics

Methodology

Allele-Specific Polymerase Chain Reaction

Performed

2 - 3x week

Reported

4 - 8 working days

Performing Laboratory Website (click below)

Test Last Updated

09/25/2026

Reference Interval

By report

Interpretive Data

Refer to report. This test was developed and its performance characteristics determined by URMC Molecular Diagnostics Lab. It has not been cleared or approved by the U.S. Food and Drug Administration (FDA), however, FDA clearance or approval is not currently required for clinical use of this test. The results are not intended to be used as the sole means for clinical diagnosis or patient management decisions.

CPT Codes

81270

LOINC Mapping

Blood/Tissue: 43399-5
Bone Marrow: 72333-8

CPT Codes

81270

LOINC Mapping

Blood/Tissue: 43399-5
Bone Marrow: 72333-8

Pricing

Refer to Lab Account Manager. email: labservicesoutreach@urmc.rochester.edu
Specimen Requirements

Ordering Recommendations

If reflex to CALR is selected, testing will proceed to CALR upon a Negative JAK2 V617F result. 

Collect

Heme samples : one 5 mL blood in EDTA (lav top), or one 3 mL bone marrow in EDTA (min 0.5mL or >100K nucleated cells

Storage/Transport Temperature

Several hours ambient is acceptable.  Do not freeze

Stability (from collection to initiation)

Ambient: 72 hours; Refrigerated: 1 week; Frozen: Unacceptable

Test Barcode Number

42253

ARUP Test Code

0051245
Testing

Lab Section

Molecular Diagnostics

Methodology

Allele-Specific Polymerase Chain Reaction

Performed

2 - 3x week

Reported

4 - 8 working days

Performing Laboratory Website (click below)

Test Last Updated

09/25/2026
Result Interpretation

Reference Interval

By report

Interpretive Data

Refer to report. This test was developed and its performance characteristics determined by URMC Molecular Diagnostics Lab. It has not been cleared or approved by the U.S. Food and Drug Administration (FDA), however, FDA clearance or approval is not currently required for clinical use of this test. The results are not intended to be used as the sole means for clinical diagnosis or patient management decisions.

Coding

CPT Codes

81270

LOINC Mapping

Blood/Tissue: 43399-5
Bone Marrow: 72333-8
URM Labs Internal
Test Build

CPT Codes

81270

LOINC Mapping

Blood/Tissue: 43399-5
Bone Marrow: 72333-8

Pricing

Refer to Lab Account Manager. email: labservicesoutreach@urmc.rochester.edu