Clinics and Departments

Laboratory Services

Lab Dept:

Serology

Test Name:

HHV7 IGG/IGM ANTIBODIES

General Information

Lab Order Codes:

HHV7A

Synonyms:

Herpesvirus 7 IgG and IgM Antibody Panel, IFA ;Herpesvirus 7 IgG/IgM AB Panel; Herpesvirus 7 Ab Panel; Herpesvirus 7 IgG and IgM Antibody Panel,IFA; HHV-7 IgG and IgM Ab; HHV7 IgG IgM; Human Herpesvirus-7 G/M; Soft-FHHV7

CPT Codes:

86790 x2 – Antibody; virus, not elsewhere specified

Test Includes:

HHV7 IgG and IgM Antibody titers

Logistics

Test Indications:

Human Herpesvirus 7 (HHV-7), a close relative of HHV-6, is found in >85% of the population, with transmission occurring in early childhood. Like HHV-6, HHV-7 is a cause of exanthum subitum (roseola infantum). Due to the ubiquitous nature of HHV-7 infection, >80% of individuals in the general population exhibit HHV-7 IgG titers >=1:20; however, only 5% of these individuals exhibit titers >1:320. Thus, HHV-7 IgG titers >=1:320 are suggestive of recent HHV-7 infection. Detection of HHV-7 specific IgM is also indicative of recent infection.

Lab Testing Sections:

Serology - Sendouts

Referred to:

Mayo Medical Laboratories forward to Focus Technologies, Inc. (MML Test#: FH7GM)

Phone Numbers:

Minneapolis:

Saint Paul:

 

612-813-6280

651-220-6550

Test Availability:

Daily, 24 hours

Turnaround Time:

1 – 8 days, test performed every Thursday

Special Instructions:

N/A

Specimen

Specimen Type:

Blood

Container:

Red top tube

Draw Volume:

3 mL (Minimum: 1.5 mL) blood

Processed Volume:

1 mL (Minimum: 0.5 mL) serum

Collection:

Routine venipuncture

Special Processing:

Lab Staff: Centrifuge specimen. Remove serum aliquot into a plastic screw-capped vial. Store and ship specimen refrigerated. Forward promptly.

Patient Preparation:

None

Sample Rejection:

Mislabeled or unlabeled specimens; specimens other than serum

Interpretive

Reference Range:

IgG:

<1:320

IgM:

<1:20

Critical Values:

N/A

Limitations:

This test was developed and its performance characteristics have been determined by Focus Diagnostics. Performance characteristics refer to the analytical performance of the test.

Methodology:

Immunofluorescence Assay IFA

References:

Mayo Medical Laboratories Web Page November 2012

Focus Technologies, Inc. Web Page November 2012

Updates:

11/20/12: Reference range change for IgG. Previously listed as <1:160.



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