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Prenatal Whole Genome Chromosomal Microarray

New York


  • Chromosomal Abnormalities
  • Uniparental Disomy

Clinical Utility

  • Abnormal fetal ultrasound findings
  • Ambiguous karyotype results
  • Suspected deletion/duplication syndrome
  • Family history of known or suspected chromosome imbalances
  • Abnormal maternal serum screening
  • Advanced maternal age

Lab Method

  • Whole Genome Chromosomal Microarray

Test Code


CPT Codes*


ABN Required


Turnaround Time**

~2 weeks

Preferred Specimen

20 mL Amniotic Fluid

Alternative Specimen

20 mg CVS, 2 T25 flasks cultured amnioctyes, 2 T25 flasks of cultured chorionic villi, 3 ug DNA, POC or other fetal tissue

*The CPT codes provided are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payer being billed.

**Reporting times are typical and begin once the sample(s) are received at the GeneDx laboratory, but could be extended in situations outside GeneDx’s reasonable control.