| Chromosome Microarray Assay (8000100051) | |
|---|---|
| Test Mnemonic: | CMA |
| Specimen Requirements: | |
| Container: | Lavender (EDTA) or green (Sodium heparin) tube |
| Minimum Volume: | 1 ml of whole blood |
| Storage/Transport: | Refrigerate sample. Do not freeze |
| Specimen Preparation: | No processing is required |
| Stability: | Refrigerated: 72 hours |
| Causes for Rejection: | Incomplete and/or incorrect sample identification, frozen samples, incorrect collection container, samples other than whole blood |
| Reference Range: | See report |
| Turnaround Time: | 10-12 Days |
| Methodology: | Whole Genome Chromosome Microarray |
| Performed: | Molecular Diagnostics Laboratory |
| Synonyms: | Microarray; Chromosome microarray; Genomic microarray |
| Clinical Indication: | Developmental Disabilities or Congenital Anomalies |
| Patient Preparation : | Patient/Legal Guardian counseling and informed consent are recommended for genetic testing. Patient clinical information is helpful to interpret test result. Please submit the “Informed Consent for Chromosome Microarray (CMA) Testing” form with patient samples. |
| CPT 4 Code: | 81229 |
| Note: | The purpose of the chromosome microarray test is to look for the presence of copy number variation (CNV) and absence of heterozygosity (AOH)throughout the entire genomic DNA. This type of genetic testing may be used to confirm a diagnosis in a person affected by an illness or may be used in individuals who have a family history of a genetic condition to determine the presence of disease-causing CNV and AOH. |
| When ordering tests for which Medicare or Medicaid reimbursement will be sought, physicians should only order tests that are medically necessary for the diagnosis or treatment of the patient. Components of the organ or disease panels may be ordered individually. The diagnostic information must substantiate all tests ordered and must be in the form of an ICD-10 code or its verbal equivalent. | |