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HelpTest ID LBOR0144 BCR/ABL1, p190, mRNA Detection, Reverse Transcription-PCR (RT-PCR), Quantitative, Monitoring Assay, Varies
Useful For
Monitoring response to therapy in patients with known e1/a2 BCR/ABL1 (p190) fusion forms
Specimen 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
Reject Due To
| Gross hemolysis | Reject |
| Moderately to severely clotted | Reject |
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 |
Day(s) Performed
Monday through Friday
Report Available
4 to 8 daysMethod Name
Quantitative Reverse Transcription-Polymerase Chain Reaction (RT-PCR)
Performing Laboratory
Mayo Clinic Laboratories in Rochester
CPT Code Information
81207
Reporting Name
BCR/ABL1, p190, Quant, MonitorSpecial Instructions
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.
Test 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.Secondary ID
83336Forms
1. Hematopathology Patient Information (T676)
2. If not ordering electronically, complete, print, and send a Hematopathology/Cytogenetics Test Request (T726) with the specimen.
Testing Algorithm
For information see BCR/ABL1 Ordering Guide for Blood and Bone Marrow.
Sanford Laboratory Interface Build Information
| Result Code | Result Code Description |
|---|---|
| 20417 | BCR/ABL P190 Result |
| 17482 | Specimen Type |
| 17483 | Interpretation |