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Herpesvirus 7 (HHV-7) DNA, Quantitative Real-Time PCR
Test CodeHV7DQ
CPT Codes
87799
Preferred Specimen
1 mL whole blood or 1 mL serum or 1 mL CSF
Minimum Volume
0.3 mL
Instructions
Do not freeze whole blood
Transport Container
Transport tube
Transport Temperature
Refrigerated (cold packs)
Specimen Stability
Whole blood
Room temperature: 48 hours
Refrigerated: 7 days
Frozen: Unacceptable
All other specimens
Room temperature: 48 hours
Refrigerated: 7 days
Frozen: 30 days
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Samples collected in lithium or sodium heparin
Methodology
Real-Time Polymerase Chain Reaction
FDA Status
This test was developed and its analytical performance characteristics have been determined by Quest Diagnostics. It has not been cleared or approved by the U.S. Food and Drug Administration. This assay has been validated pursuant to the CLIA regulations and is used for clinical purposes.
Setup Schedule
Set up: Daily; Report available: 1 day
Report Available
Set up: Daily; Report available: 1 day
Reference Range
500 copies/mL
Clinical Significance
This test is used in the diagnosis of human herpesvirus 7 infection. HHV-7 is closely related to HHV-6 and CMV, and can cause reactivation in transplant patients or other immune-compromised individuals. PCR may detect infection earlier than immunologial methods and provides more rapid results than culture, but does not provide information on past exposure or immunity. Quantitative measurement may provide information on disease regression.
Performing Laboratory
Quest Diagnostics Nichols Institute 14225 Newbrook Drive Chantilly, VA 20153
Last Updated: February 23, 2012