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HelpTest ID PPAP Parental Sample Prep for Prenatal Microarray Testing, Blood
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 ID 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.
Reporting Name
Parental Prenatal Array Prep TestSpecimen Type
Whole bloodNecessary Information
1. The reason for referral is required.
2. Include the name listed on the prenatal sample that was submitted for prenatal microarray analysis.
Specimen Required
This test requires 2 blood specimens: 1 sodium heparin and 1 EDTA.
Specimen Type: Whole blood
Container/Tube: Green top (sodium heparin) and lavender top (EDTA)
Specimen Volume:
EDTA: 3 mL
Sodium heparin: 4 mL
Collection Instructions:
1. Invert several times to mix
blood.
2. Send specimens in original tubes.
Specimen Stability Information
| Specimen Type | Temperature | Time | Special Container |
|---|---|---|---|
| Whole blood | Ambient (preferred) | ||
| Refrigerated | |||
Reference Values
An interpretive report will be provided.
Day(s) Performed
Monday through Friday
Report Available
VariesPerforming Laboratory
Mayo Clinic Laboratories in Rochester
CPT Code Information
This test ID 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 | 85069-3 |
| 53340 | Additional Information | 48767-8 |
| 53393 | Released By | 18771-6 |