2 - 6 days
Turnaround time is defined as the usual number of days from the date of pickup of a specimen for testing to when the result is released to the ordering provider. In some cases, additional time should be allowed for additional confirmatory or additional reflex tests. Testing schedules may vary.
0.5 mL (Note: This volume does not allow for repeat testing.)
Red-top tube or gel-barrier tube
Specimen should be free of bacterial contamination, hemolysis, and lipemia.
Hemolysis; lipemia; gross bacterial contamination
Aid in the diagnosis of past infection/exposure to roseola infantum; may be useful in diagnosis of chronic fatigue syndrome
This procedure may be considered by Medicare and other carriers as investigational and, therefore, may not be payable as a covered benefit for patients.
Enzyme immunoassay (EIA)
• Negative: <0.90 index
• Equivocal: 0.90−1.10 index
• Positive: >1.10 index
Fourfold rises in titer are suggestive of either recent, primary, or reactivated infection. The presence of elevated titers to HHV-6 in the absence of responses to HAV, HBV, CMV, and EMV suggests that titer results are associated with high specificity.
Human herpesvirus 6 (HHV-6) has recently been identified as the agent associated with both pediatric and adult infections. Most children have been infected by age three. The acute infection in children is characterized clinically by an acute febrile illness, irritability, inflammation of tympanic membranes, and (uncommonly) a rash characteristic of roseola.
In adults, HHV-6 has been associated with chronic fatigue and spontaneously resolving fever resembling a mononucleosis-like illness. During the acute episode an elevated IgM HHV-6 is useful. An increase in IgG HHV-6 between acute and convalescent serum sample is consistent with a recent HHV-6 infection.
|Order Code||Order Code Name||Order Loinc||Result Code||Result Code Name||UofM||Result LOINC|
|161075||HHV 6 IgG Antibodies||41148-8||161076||HHV 6 IgG Antibodies||index||41148-8|
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