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Maternal Cell Free Fetal DNA Testing

Item Value
Available Stat? No
Test code CFFD
Performed by Ariosa
Sendout? Yes
Method Directed DNA Analysis
Collection Instructions Draw two Ariosa black/tan tubes per patient. Fully completed Integrated Genetics Test requisition required before draw.
Container type Ariosa light black and tan blood collection tubes x2
Amount to Collect 20 mL blood
Sample type Whole blood
Preferred volume 20 mL blood
Min. Volume 16 mL blood
UCSF Rejection Criteria Single tube received. Gestational age <10 weeks; incorrect or expired blood tube; quantity not sufficient for analysis; specimen received more than five days from collection; excessive hemolysis; frozen specimens
Processing notes Two tubes per patient is REQUIRED. Do not aliquot. Maintain at ambient temperature. Transport to CB at ambient.
Ref Lab Rejection Criteria Single tube received. Gestational age <10 weeks; incorrect or expired blood tube; quantity not sufficient for analysis; specimen received more than five days from collection; excessive hemolysis; frozen specimens
Normal range
Synonyms NIPT, Non-invasive Prenatal Test; Harmony Prenatal test; Harmony with Y analysis; Harmony with X,Y analysis.
Turn around times 10-15 days
Additional information Determination in women at high risk for fetal trisomies 13, 18, and 21 who are pregnant with twins or a single fetus of at least 10 weeks' gestation. Test results that suggest high risk for fetal trisomy should prompt consideration for genetic counseling and/or additional genetic testing. Test results that suggest low risk for fetal trisomy should be reviewed with the patient by the health care provider. Results should be considered in the context of other clinical criteria.
CPT coding 81599-90
Last Updated 9/16/2014 8:17:39 AM
Entry Number 1574
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