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Test Code PPAP Parental Sample Prep for Prenatal Microarray Testing

Useful For

Preparing parental blood samples for possible confirmation testing if an abnormality is detected on the prenatal array sample

 

DNA extraction of the maternal blood sample used for maternal cell contamination testing

Testing Algorithm

This test can only be ordered on the parents when a prenatal microarray test has been ordered on the fetal sample.

 

This test code contains no charge and serves as a way to correlate proband and parental specimens. If additional testing is warranted, the appropriate tests will be added. 

 

When prenatal microarray analysis is ordered, parental blood samples are collected and prepared for confirmation studies should an abnormality be detected on the prenatal sample. If an abnormality is detected on the fetal sample, the most appropriate testing (microarray, FISH, or chromosome analysis) to aid in the interpretation of the prenatal result is performed on the parental samples. A paternal blood sample is desired but not required.

 

Maternal cell contamination testing will be performed on the maternal blood and prenatal samples to rule out the presence of maternal cells in the fetal sample.

Method Name

DNA Extraction and Cell Culture

Reporting Name

Parental Prenatal Array Prep Test

Specimen Type

Varies

Specimen Required

A whole blood EDTA and a whole blood sodium heparin specimen, as well as the reason for referral, are required.

 

Note: Include the name listed on the prenatal sample that was submitted for prenatal microarray analysis.

 

Specimen Type: Whole blood
Container/Tube: Green top (sodium heparin) and lavender top (EDTA)
Specimen Volume: 3 mL for each tube
Collection Instructions:
1. Invert several times to mix blood.
2. Send specimens in original tubes.

Specimen Stability Information

Specimen Type Temperature Time
Varies Ambient (preferred)
  Refrigerated 

Reference Values

An interpretive report will be provided.

Day(s) and Time(s) Performed

Samples processed Monday through Sunday. Results reported Monday through Friday, 8 a.m. to 5 p.m. CST.

Performing Laboratory

Mayo Medical Laboratories in Rochester

CPT Code Information

This test code contains no charge and serves as a way to correlate proband parental specimens. If additional testing is warranted, the appropriate tests will be added.

LOINC Code Information

Test ID Test Order Name Order LOINC Value
PPAP Parental Prenatal Array Prep Test In Process

 

Result ID Test Result Name Result LOINC Value
55079 Result Summary 50397-9
52978 Interpretation 69965-2
52979 Reason For Referral 42349-1
53337 Specimen 31208-2
53338 Source 31208-2
55268 Requested FISH Test 48767-8
53339 Method 49549-9
53340 Additional Information 48767-8
53393 Released By No LOINC Needed