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Chromosome Microarray Assay (8000100051)
Test Mnemonic:


Specimen Requirements:

Lavender (EDTA) or green (Sodium heparin) tube

Minimum Volume:

1 ml of whole blood


Refrigerate sample. Do not freeze

Specimen Preparation:

No processing is required


 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


Whole Genome Chromosome Microarray


Molecular Diagnostics Laboratory


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) Testingform with patient samples.

CPT 4 Code:



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.
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