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HelpTest Code CHRCBM Chromosome Analysis, Congenital Disorders, Blood
Additional Codes
| EPIC EAP | Mayo |
| LAB888 | CHRCB |
Useful For
Diagnosis of congenital chromosome abnormalities, including aneuploidy, structural abnormalities, and balanced rearrangements
Reflex Tests
| Test ID | Reporting Name | Available Separately | Always Performed |
|---|---|---|---|
| _M15A | Metaphases, 1-14 | No, (Bill Only) | No |
| _M19 | Metaphases, 15-20 | No, (Bill Only) | No |
| _MG19 | Metaphases, >20 | No, (Bill Only) | No |
| _KTG2 | Karyotypes, >2 | No, (Bill Only) | No |
| _STAC | Ag-Nor/CBL Stain | No, (Bill Only) | No |
Special Instructions
Method Name
Cell Culture with Mitogens followed by Chromosome Analysis
Reporting Name
Chromosomes, Congenital, BloodSpecimen Type
Whole bloodShipping Instructions
Advise Express Mail or equivalent if not on courier service.
Necessary Information
Provide a reason for testing with each specimen. The laboratory will not reject testing if this information is not provided, but appropriate testing and interpretation may be compromised or delayed.
Specimen Required
Submit only 1 of the following specimens:
Specimen Type: Whole blood
Container/Tube: Green top (sodium heparin)
Specimen Volume: 4 mL
Collection Instructions:
1. Invert several times to mix blood.
2. Other anticoagulants are not recommended and are harmful to the viability of the cells.
3. Label specimen as whole blood.
Specimen Type: Cord blood
Container/Tube: Green top (sodium heparin)
Specimen Volume: As much as possible
Collection Instructions:
1. Invert several times to mix blood.
2. Other anticoagulants are not recommended and are harmful to the viability of the cells.
3. Label specimen as cord blood.
Specimen Minimum Volume
2 mL
Specimen Stability Information
| Specimen Type | Temperature | Time |
|---|---|---|
| Whole blood | Ambient (preferred) | |
| Refrigerated | ||
Reject Due To
All specimens will be evaluated at Mayo Clinic Laboratories for test suitability.Day(s) Performed
Monday through Friday
Report Available
10 daysPerforming Laboratory
Mayo Clinic Laboratories in Rochester
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.CPT Code Information
88230, 88291- Tissue culture for Lymphocytes, Interpretation and report
88262 w/modifier 52-Chromosome analysis less than15 cells (if appropriate)
88262-Chromosome analysis with 15 to 20 cells (if appropriate)
88262, 88285-Chromosome analysis with greater than 20 cells (if appropriate)
88280-Chromosome analysis, greater than 2 karyotypes (if appropriate)
88283-Additional specialized banding technique (if appropriate)
LOINC Code Information
| Test ID | Test Order Name | Order LOINC Value |
|---|---|---|
| CHRCB | Chromosomes, Congenital, Blood | 81862-5 |
| Result ID | Test Result Name | Result LOINC Value |
|---|---|---|
| 52366 | Result Summary | 50397-9 |
| 52368 | Interpretation | 69965-2 |
| 52367 | Result | 82939-0 |
| CG775 | Reason for Referral | 42349-1 |
| 52369 | Specimen | 31208-2 |
| 52370 | Source | 31208-2 |
| 52372 | Method | 85069-3 |
| 52371 | Banding Method | 62359-5 |
| 54630 | Additional Information | 48767-8 |
| 52373 | Released By | 18771-6 |
Forms
New York Clients-Informed consent is required. Document on the request form or electronic order that a copy is on file. The following documents are available:
AKA: Karotype