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HelpTest Code HHV7P HHV-7 Quantitative Real-time PCR (Plasma)
Clinical Indications
HHV-7 is
detectable in a variety of
transplant settings, both HSCT and solid
organ. Direct effects of HHV-7 include
fever, rash, myelosuppression, encephalitis, and pneumonitis.
Potentially more important are the indirect effects HHV-7 has on CMV disease,
invasive fungal disease, and allograft dysfunction.
Quantitative
HHV-7
DNA
PCR can be used
to document the presence
of the virus as well as track the course of infection.
Additional Test Codes
Epic Order Name: HUMAN HERPES VIRUS 7 QUANT PLASMA (aka
HHV7P)
Sunquest Order Code: HHV7P
Epic Px Code: LAB2858
Specimen Collection Type
Preferred: Lavender (EDTA)
Acceptable: Yellow (ACD solution)
Minimum Collection Volume
0.5 mL
Reference Range
93 copies/mL to 1×10^8 copies/mL
Critical Value
N/A
Interpretation
The primers and probes used in this assay are specific for
known
strains of HHV-7 based on similarity
search algorithms. Additionally, no cross reactivity was
detected
when tested against adenoviruses, BKV,
CMV,
EBV,
HSV-1,
HSV-2,
HHV-6 variant
A, HHV-6
variant B, HHV-8,
JCV, parvovirus
B19, SV-40, and
VZV.
Rejection Criteria
Specimens beyond their acceptable length of time from
collection
as listed in the specimen stability
Specimen Availability for Add-on Testing
1 Day
Specimen Stability
Ambient (preferred): 4 days
Refrigerated: 4 days
Frozen: 7 days
Day(s) Performed
Monday through Saturday
Performing Lab- Department
TUKHS-BH-Mail Outs
CPT Code
87799
LOINC Code
N/A
Test Alias
Herpes Virus-7 PCR, Plasma
Herpesvirus 7 PCR, Plasma
HHV-7
DNA
Quant, Plasma
Human Herpes Virus-7 PCR, Plasma
Additional Information / Notes
Turnaround time: Same day (within 8 – 12 hours from
receipt of specimen)