TEST CATALOG ORDERING & RESULTS SPECIMEN HANDLING CUSTOMER SERVICE EDUCATION & INSIGHTS
Test Catalog

Test ID: CMACB    
Chromosomal Microarray, Congenital, Blood

Testing Algorithm Delineates situations when tests are added to the initial order. This includes reflex and additional tests.

This test is not appropriate for detecting acquired copy number changes and excessive homozygosity. If this test is ordered with a reason for referral indicating a hematological disorder, the test will be cancelled and CMAH / Chromosomal Microarray, Hematologic Disorders, Varies will be performed as the appropriate test.

 

The following algorithms are available in Special Instructions:

-Epilepsy: Unexplained Refractory and/or Familial Testing Algorithm

-Prader-Willi and Angelman Syndromes: Laboratory Approach to Diagnosis

Specimen Type Describes the specimen type validated for testing

Whole blood

Necessary Information

The reason for referral is required.

Specimen Required Defines the optimal specimen required to perform the test and the preferred volume to complete testing

This test requires 2 blood specimens: 1 sodium heparin and 1 EDTA.

 

Specimen Type: Whole blood

Container/Tube: Green top (sodium heparin) and lavender top (EDTA)

Specimen Volume: 3 mL EDTA tube and 4 mL sodium heparin tube

Collection Instructions:

1. Invert several times to mix blood.

2. Send specimens in original tubes.

Special Instructions Library of PDFs including pertinent information and forms related to the test

Forms

1. 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 in Special Instructions:

-Informed Consent for Genetic Testing (T576)

-Informed Consent for Genetic Testing-Spanish (T826)

2. Chromosomal Microarray Patient Information (T665) in Special Instructions

3. Family Member Phenotype Information for Genomic Testing in Special Instructions

4. If not ordering electronically, complete, print, and send a Neurology Specialty Testing Client Test Request (T732) with the specimen.

Specimen Minimum Volume Defines the amount of sample necessary to provide a clinically relevant result as determined by the Testing Laboratory

2 mL

Reject Due To Identifies specimen types and conditions that may cause the specimen to be rejected

All specimens will be evaluated at Mayo Clinic Laboratories for test suitability.

Specimen Stability Information Provides a description of the temperatures required to transport a specimen to the performing laboratory, alternate acceptable temperatures are also included

Specimen TypeTemperatureTimeSpecial Container
Whole bloodAmbient (preferred)
 Refrigerated