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Test Code LAB3233 Herpes Simplex Virus (HSV), Molecular Detection, PCR, Spinal Fluid

Secondary ID

63434

Useful For

Aiding in the rapid diagnosis of herpes simplex virus (HSV)-1 and HSV-2 infections of the central nervous system

Method Name

Real-Time Polymerase Chain Reaction (RT-PCR)

Reporting Name

Herpes Simplex Virus, PCR, CSF

Specimen Type

CSF


Specimen Required


Supplies: Sarstedt Aliquot Tube, 5 mL (T914)

Container/Tube: Plastic vial

Specimen Volume: 0.2 mL

Collection Instructions:

1. Submit from second spinal fluid collection vial.

2. Transfer into aliquot vial using sterile technique.

3. Do not centrifuge or heat inactivate.

Additional Information:

1. The high sensitivity of amplification by polymerase chain reaction (PCR) requires the specimen to be processed in an environment in which contamination of the specimen by herpes simplex virus DNA is not likely.

2. Specimens that are received with less than the minimum volume required for all testing requested will be canceled.


Specimen Minimum Volume

0.1 mL

Specimen Stability Information

Specimen Type Temperature Time
CSF Refrigerated (preferred) 7 days
  Frozen  7 days

Reject Due To

Heat-treated spinal fluid Reject

Reference Values

Negative

Cautions

This test is not validated for sample types other than cerebrospinal fluid (CSF).

 

Negative results do not preclude herpes simplex virus (HSV)-1 or HSV-2 infection and should not be used as the sole basis for treatment or other patient management decisions.

 

False-negative results may occur if the viruses are present at a level that is below the analytical sensitivity of the assay or if the virus has genomic mutations, insertions, deletions, or rearrangements, or if the assay is performed very early in the course of illness.

 

For encephalitis patients with a negative herpes simplex PCR result, consideration should be given to repeating the test 3 to 7 days later for patients demonstrating a compatible clinical syndrome or temporal lobe localization on neuroimaging.(3)

 

The performance of this test has not been established for immunocompromised individuals, nor has it been established for monitoring treatment of HSV infection of the central nervous system.

Day(s) Performed

Monday through Sunday

Report Available

Same day/1 to 2 days

Performing Laboratory

Mayo Clinic Laboratories in Rochester

Test Classification

This test has been cleared, approved, or is exempt by the US Food and Drug Administration and is used per manufacturer's instructions. Performance characteristics were verified by Mayo Clinic in a manner consistent with CLIA requirements.

CPT Code Information

87529 x 2

87529 (if appropriate for government payers)

LOINC Code Information

Test ID Test Order Name Order LOINC Value
HSVC Herpes Simplex Virus, PCR, CSF 92865-5

 

Result ID Test Result Name Result LOINC Value
36858 HSV 1 PCR, C 16952-4
36859 HSV 2 PCR, C 16960-7

NY State Approved

Yes

Testing Algorithm

For more information see Meningitis/Encephalitis Panel Algorithm.

Forms

If not ordering electronically, complete, print, and send a Microbiology Test Request (T244) with the specimen.