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Reflex to SNP Array

Item Value
Approval req'd? Yes, if not ordered by Genetics, Neurology or Neonatal Intensive Care Unit faculty or fellows. Requests on inpatients require approval from
Cytogenetics/Array staff. Insurance authorization required.
Available Stat? No
Test code RSNPA
Test group Cytogenetics - Microarray
Performed by Cytogenetics
In House Availability Monday to Friday 8:00 AM to 4:30 PM
Patient Preparation None
Collection Instructions Maintain samples at room temperature during transport to the laboratory.
Account set-up instructions. Note we only do institutional billing.
When payer authorization is received it should be forwarded immediately to
the laboratory.
Container type See primary test container type (amnio, CVS, Tissue), lavender top, dark green top or extracted DNA.
Amount to Collect See primary test collection amount
Sample type Amniotic Fluid, CVS, Tissue, Blood
Preferred volume Adult: 5 mL whole blood
Infant/child: 3 mL whole blood
Extracted DNA: 10 micrograms
Min. Volume Adult: 2 mL whole blood
Infant/child: 2 mL whole blood
Extracted DNA: 10 micrograms
UCSF Rejection Criteria Insufficient volume, unlabeled tubes, clotted samples, Samples received in
Lithium-heparin (Lt. Green top) tubes
Processing notes Refrigerate samples. DO NOT CENTRIFUGE OR FREEZE.
For questions, contact the microarray laboratory at 514-8964
Normal range
Synonyms Chromosome test reflex to SNP array, SNP test pending other test results
Stability See Primary test stability
Turn around times Varies pending primary culture and results, generally 7-14 days after chromosome results
Additional information No billing needed, a place holder code to switch to SNP test codes if needed.
CPT coding None
LOINC code None
LDT or Mod FDA? Yes
Last Updated 9/20/2016 11:21:16 AM
Entry Number 1749
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