Laboratory Test Directory

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hiV virTUAL PHENOTYPING: (138-0018 and 138-0021)
Clinical Indication:	Determination of drug resistant mutations
Test Mnemonic:	HIVVIRPHEN
Methodology:	RT-PCR, Sanger sequencing
Performed:	Molecular Diagnostics Laboratory
Turnaround Time:	10-14 days
Specimen Requirements:	Patient Preparation: Routine venipuncture Collect: One pearl color (PPT) top Vacutainer; collect one tube for this test and do not combine with other test orders. Specimen Preparation: Sample must be processed within 6 hours of collection for optimal recovery of DNA. Plasma: separate from cells by centrifugation at 1,000 x g for 15 minutes. Storage/Transport: Transport at room temperature or refrigerated temperature. Stability: Separation must occur within 6 hours of collection, store frozen for up to one month. Causes for Rejection: Incomplete and/or incorrect sample identification, insufficient sample volume, incorrect blood collection tube (Vacutainer), gross hemolysis, clots, prolonged time to processing
Clinical Information:
Reference Range:
Note:	The report is directly uploaded into EPIC and myUTMB.
CPT 4 Code:	87900, 87901
Review	1/15/2013 T. Friloux and Dr. Dong
When ordering tests for which Medicare or Medicaid reimbursement will be sought, physicians should only order tests that are medically necessary for the diagnosis or treatment of the patient. Components of the organ or disease panels may be ordered individually. The diagnostic information must substantiate all tests ordered and must be in the form of an ICD-9 code or its verbal equivalent.

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