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HelpTest Code J1213 JAK2 Exons 12 & 13 Mutations Detection
Additional Codes
| Epic Ordering Code | LAB5241 |
| NBS code | LBC07191 |
| Service code | 1035074 |
Specimen Requirements
Submit the following:
| Preferred: |
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Purple Top |
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Processing Requirements
Specimen type: Whole Blood or Bone Marrow Aspirate
Volume: 3.0 mL (at least 1.0 mL for bone marrow aspirate)
Storage/transport requirements: Ambient or refrigerated
Specimen Stability
| Specimen Type | Whole Blood or Bone Marrow Aspirate |
| Ambient | 7 days |
| Refrigerate | 7 days |
Methodology
Polymerase Chain Reaction, DNA sequencing
Days and Times Performed
TAT 21 - 30 days
Reference Interval
An interpretative report will be provided.
Testing Laboratory
National University Hospital
Genomics Diagnostic Laboratory, 67724384
Useful For
This is a second line test that should be used when the test for JAK2 Val617Phe(V617F) mutation is negative. The test aids in the distinction between a reactive cytosis and a myeloproliferative neoplasm.
Update
Last updated 11/06/2026
Test Info
(a) This test was developed by NUH Laboratory Medicine.
(b) This laboratory test has undergone in-house evaluation with appropriate quality assurance and control measures in line with laboratory best practice and accreditation requirements.