Chromosomal microarray (CMA) scans all chromosomes at high resolution to detect small missing or extra pieces (deletions/duplications) that a routine karyotype cannot see.
Recommended as a first-line test for children with developmental delay, intellectual disability, autism or multiple birth defects, and in pregnancy when the ultrasound shows abnormalities.
Suspected inherited conditions, family history, or as advised by a specialist or genetic counsellor.
No fasting needed.
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No. It detects copy-number changes but not single-gene mutations or balanced rearrangements.
No fasting is needed. You can eat and drink normally unless your doctor has advised otherwise.
Blood sample (EDTA tube); some genetic tests also accept saliva, tissue or other samples.
Usually within 9–10 days after the sample reaches the lab. You will receive the report online.