Calrexon9mutanlbldt
Key facts at a glance
- LOINC
- 77174-1
- Short code
- CALRMUT
- Synonyms
- CALR Exon 9 Mut Anl Bld/T
- Category
- chemistry
- Sample
- whole-blood
- Container
- EDTA (lavender/purple-top) tube for whole blood; sterile container for tissue specimens
- Units
- N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- Method
- molgen
- CPT
- 81219
- SNOMED
- 426396005
- Specimen volume
- 3-5 mL of whole blood collected in EDTA tube; minimum 1 mL for pediatric or limited samples; tissue samples should be at least 5 mg placed in sterile saline or transport medium
- Stability
- Whole blood: stable at room temperature (18-25°C) for 24-48 hours; refrigerated (2-8°C) for up to 7 days; frozen (-20°C or below) for long-term storage of extracted DNA. Tissue: stable in transport medium at 2-8°C for 24-48 hours; frozen for longer storage.
- Hemolysis max
- 0
- Lipemia max
- 0
- Icterus max
- 0
- TAT
- 72–336 hours
- Order
- routine
Reference range
No CALR exon 9 mutation detected (Negative). A positive result indicates the presence of a somatic CALR mutation, most commonly the type 1 (c.1099_1150del, p.L367fs*46) or type 2 (c.1154_1155insTTGTC, p.K385fs*47) variants, or other less common insertions/deletions within exon 9.N/A
No special patient preparation is required prior to specimen collection. Patients should follow standard phlebotomy procedures. Inform the laboratory if the patient has received a recent blood transfusion, as this may affect results in circulating cell-free DNA assays (less relevant for whole-blood genomic testing of leukocytes).
This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.
This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.
If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.
Medically reviewed by WellAlly Editorial Team Last reviewed August 16, 2026. · Read our editorial policy