What is cytogenetic testing: 2.7 M SNPS chromosomal microarray on blood?

Also known as: chromosomal microarray, congenital blood test, cytogenetic testing.

SNP’s or single nucleotide polymorphisms are single abnormalities in genes on your child’s chromosomes. Following a chromosomal analysis, microarray technology allows for millions of sites on the chromosome, plus other genetic information to be tested for abnormalities.

Approximately 10% of children with unexplained mental problems/developmental abnormalities or abnormal facial features as well as some children with congenital malformations may have gene abnormalities which can detected by microarray technology.

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Reviewed by: Jack Wolfsdorf MD.

This page was last updated on: 1/29/2019 3:21:13 PM