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HelpTest Code CALR Calreticulin, CALR exon 9 mutation screening
Additional Codes
| Epic Ordering Code | LAB2401 |
| NBS code | LBC12418 |
| Service code | 1035089 |
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, Fragment Analysis
Days and Times Performed
TAT 14 days
Reference Interval
An interpretative report will be provided.
Testing Laboratory
National University Hospital
Genomics Diagnostic Laboratory, 67724384
Useful For
A diagnostic biomarker for patients with suspected myeloproliferative neoplasm (MPN)
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.