Test Catalog

Test ID: CMAMT    
Chromosomal Microarray, Autopsy/Products of Conception/Stillbirth, Tissue

Useful For Suggests clinical disorders or settings where the test may be helpful

Diagnosis of congenital copy number changes in products of conception, including aneuploidy (ie, trisomy or monosomy) and structural abnormalities

 

Diagnosing chromosomal causes for fetal death

 

Determining recurrence risk of future pregnancy losses

 

Determining the size, precise breakpoints, gene content, and any unappreciated complexity of abnormalities detected previously by other methods such as conventional chromosome and FISH studies

 

Determining if apparently balanced abnormalities identified by previous conventional chromosome studies have cryptic imbalances, since a proportion of such rearrangements that appear balanced at the resolution of a chromosome study are actually unbalanced when analyzed by higher-resolution chromosomal microarray

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

Hematoxylin and eosin stain review of the paraffin-embedded sample is performed to identify the area of fetal tissue prior to DNA extraction and microarray analysis. If additional FISH testing is requested, it will be performed at an additional charge.

 

A maternal blood sample is requested when ordering this test, see PPAP / Parental Sample Prep for Prenatal Microarray Testing. The PPAP test must be ordered under a different order number than the prenatal specimen

 

Maternal cell contamination (MCC) testing will be performed at no additional charge on the maternal blood and fetal tissue to rule out the presence of maternal cells in the product of conception sample. Testing will not be rejected if maternal blood is not received; however, the possibility of maternal cell contamination cannot be excluded.

 

A paternal blood sample is desired but not required, see PPAP / Parental Sample Prep for Prenatal Microarray Testing.

 

If a fresh specimen is submitted, the test will be cancelled and CMAPC / Chromosomal Microarray, Autopsy, Products of Conception, or Stillborn will be added and performed as the appropriate test.

 

See Frequently Asked Questions: Cytogenetic Testing of Products of Conception by Chromosomal Microarray Analysis in Special Instructions.

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

Method Name A short description of the method used to perform the test

Chromosomal Microarray (CMA) using Affymetrix Oncoscan 

NY State Available Indicates the status of NY State approval and if the test is orderable for NY State clients.

Yes

Reporting Name Lists a shorter or abbreviated version of the Published Name for a test

Chromosomal Microarray, POC, FFPE

Aliases Lists additional common names for a test, as an aid in searching

aCGH
Array CGH
Array Comparative Genomic Hybridization
Oligonucleotide Array
Oligo Array
Single Nucleotide Polymorphism (SNP) Array
Whole Genome Array
Microarray
Molecular Karyotype
OncoScan
Congenital Array
Constitutional Array
Absence of Heterozygosity (AOH)
Fetal Demise
Miscarriage
Pregnancy Loss
Paraffin Embedded Tissue Array
Paraffin Embedded POC Array