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St. John Health System
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Prenatal Chromosome Microarray

Order Name Prenatal CMA
Test Number: 5195557
Revision Date 09/03/2024
Test Name Methodology LOINC Code
Prenatal Chromosome Microarray
SNP Microarray Analysis 62365-2 
SPECIMEN REQUIREMENTS
Specimen Specimen Volume (min) Specimen Type Specimen Container Transport Environment
Preferred 2 T-25 flasks (1 T-25 flask) Amniotic Fluid Confluent T-25 flask Room Temperature
Instructions Notes:  1 T-25 flask minimum volume will delay results due to culturing; direct array cannot be performed with minimum volumes)
Specimen type:   Amniotic Fluid;   Cultured amniotic fluid sample or Chorionic villus sample (CVS) cells. Maternal cell contamination studies are recommended
Specimen container:  Two T-25 flask containers containing sterile Ringer's lactate OR Hank's balanced salt solution OR transport media provided by the cytogenetic laboratory (Do NOT use urine containers for shipping).
Specimen Storage: Maintain specimen at room temperature.
Specimen Collection: Not Available
Causes for reject:  Quantity not sufficient for analysis;  One T-25 flask minimum volume will delay results due to culturing; direct array cannot be performed with minimum volumes)
Special Instructions:   A completed Informed Consent and Prenatal Chromosome SNP Microarray Questionnaire should accompany specimens. Call 800-345-4363 to request the Informed Consent and Questionnaire form.
If a chromosome study has been performed it's recommended that it be included with sample submission.  If prior NIPT studies have been performed, include copy of the report.  If specimens from a twin pregnancy are submitted by request it can be reported if these are DZ or MZ twins.

SNP Microarray Prenatal POC Clinical Questionnaire
Reveal® SNP Microarray: Eligibility (Preverification) & Prior Authorization Request Form
Click here to view test on Labcorp web site
GENERAL INFORMATION
Expected TAT 8 - 15 days 
CPT Code(s) 81229
Internal Comments 09/03/2024 - test originally built in 2023 creating web listing now - BM
Service Provided By Labcorp Oklahoma, Inc.
Lab Section Reference Lab