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HelpTest Code LAB0001882 BCR/ABL1, p190, mRNA Detection, Reverse Transcription-PCR (RT-PCR), Quantitative, Monitoring Assay, Varies
Additional Codes
| Mayo Test ID |
|---|
| BA190 |
Performing Laboratory
Mayo Clinic Laboratories in Rochester
Useful For
Monitoring response to therapy in patients with known e1/a2 BCR/ABL1 (p190) fusion forms
Testing Algorithm
For information see BCR/ABL1 Ordering Guide for Blood and Bone Marrow.
Special Instructions
Method Name
Quantitative Reverse Transcription-Polymerase Chain Reaction (RT-PCR)
Reporting Name
BCR/ABL1, p190, Quant, MonitorSpecimen Type
VariesOrdering Guidance
This test should not be used to screen for BCR/ABL1 fusions at the time of diagnosis; order either BADX / BCR/ABL1, Qualitative, Diagnostic Assay, Varies; or BCRFX / BCR/ABL1 Qualitative Diagnostic Assay with Reflex to BCR/ABL1 p190 Quantitative Assay or BCR/ABL1 p210 Quantitative Assay, Varies should be ordered for that purpose.
To monitor patients carrying BCR/ABL1 fusion forms coding for the p210 protein, which includes most patients with chronic myeloid leukemia (CML); order BCRAB / BCR/ABL, p210, mRNA Detection, Reverse Transcription-PCR (RT-PCR), Quantitative, Monitoring Chronic Myeloid Leukemia (CML), Varies.
Shipping Instructions
Refrigerate specimens must arrive within 5 days (120 hours) of collection, and ambient specimens must arrive within 3 days (72 hours) of collection. Collect and package specimen as close to shipping time as possible.
Necessary Information
Pertinent clinical history including if the patient has a diagnosis of chronic myeloid leukemia or other BCR/ABL1-positive neoplasm information is required.
Specimen Required
Submit only 1 of the following specimens:
Preferred:
Specimen Type: Whole blood
Container/Tube:
Preferred: Lavender top (EDTA)
Acceptable: Yellow top (ACD)
Specimen Volume: 10 mL
Collection Instructions:
1. Invert several times to mix blood.
2. Send whole blood specimen in original tube. Do not aliquot.
3. Label specimen as blood.
Specimen Type: Bone marrow
Container/Tube:
Preferred: Lavender top (EDTA)
Acceptable: Yellow top (ACD)
Specimen Volume: 4 mL
Collection Instructions:
1. Invert several times to mix bone marrow.
2. Send bone marrow specimen in original tube. Do not aliquot.
3. Label specimen as bone marrow.
Specimen Minimum Volume
Blood: 8 mL
Bone marrow: 2 mL
Specimen Stability Information
| Specimen Type | Temperature | Time | Special Container |
|---|---|---|---|
| Varies | Refrigerated (preferred) | 5 days | PURPLE OR PINK TOP/EDTA |
| Ambient | 72 hours | PURPLE OR PINK TOP/EDTA |
Reject Due To
| Gross hemolysis | Reject |
| Moderately to severely clotted | Reject |
Reference Values
The presence or absence of the BCR/ABL1 messenger RNA fusion form producing the p190 fusion protein is reported. If positive, the level is reported as the ratio of BCR/ABL1 (p190) transcript to ABL1 transcript in the form of a percentage.
Interpretation
An interpretive report will be provided.
Day(s) Performed
Monday through Friday
Report Available
4 to 8 daysSpecimen Retention Time
Whole blood, bone marrow: 2 weeks; Extracted RNA 3 monthsTest Classification
This test was developed and its performance characteristics determined by Mayo Clinic in a manner consistent with CLIA requirements. It has not been cleared or approved by the US Food and Drug Administration.CPT Code Information
81207
LOINC Code Information
| Test ID | Test Order Name | Order LOINC Value |
|---|---|---|
| BA190 | BCR/ABL1, p190, Quant, Monitor | 21823-0 |
| Result ID | Test Result Name | Result LOINC Value |
|---|---|---|
| 39470 | BCR/ABL1 p190 Result | No LOINC Needed |
| MP002 | Specimen Type | 31208-2 |
| 19765 | Interpretation | 69047-9 |
Forms
1. Hematopathology Patient Information (T676)
2. If not ordering electronically, complete, print, and send a Hematopathology/Cytogenetics Test Request (T726) with the specimen.