A B C D E F G H I J K L M N O P Q R S T U V W X Y Z # |
Herpes Virus 7 DNA, Qualitative Real-Time PCR [19769X]
Test Code19769
CPT Codes
87798<br><strong>This test is not available for New York patient testing.</strong>
Preferred Specimen
1 mL serum
Minimum Volume
0.3 mL
Other Acceptable Specimens
Plasma or whole blood collected in: EDTA (lavender-top) tube
Instructions
Serum: Collect blood in sterile tubes with no anticoagulants. Allow blood to clot at room temperature and separate serum from cells within 2 hours of collection. Transfer serum to sterile, plastic, screw-capped, aliquot tubes.
Plasma: Collect blood in sterile tubes containing EDTA (lavender-top) as an anticoagulant. Store collected whole blood at room temperature and separate plasma from cells within 2 hours of collection. Transfer plasma to sterile, plastic, screw-capped, aliquot tubes. Do not clarify plasma by filtration or further centrifugation. Avoid repeated freezing and thawing of specimen.
Do not freeze whole blood.
Transport Container
Transport tube
Transport Temperature
Refrigerated (cold packs)
Specimen Stability
Serum or plasma
Room temperature: 24 hours
Refrigerated: 7 days
Frozen: 30 days
Whole blood
Room temperature: 24 hours
Refrigerated: 7 days
Frozen: Unacceptable
Room temperature: 24 hours
Refrigerated: 7 days
Frozen: 30 days
Whole blood
Room temperature: 24 hours
Refrigerated: 7 days
Frozen: Unacceptable
Methodology
Real-Time Polymerase Chain Reaction (RT-PCR)
Setup Schedule
Set up: Daily; Report available: 1 day
Reference Range
Not detected
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 disease in transplant patients or other immune-compromised individuals. PCR may detect infection earlier than immunological methods and provides more rapid results than culture, but does not provide information on past exposure or immunity.
Performing Laboratory
Quest Diagnostics Nichols Institute
14225 Newbrook Drive
Chantilly, VA 20153