Herpes Simplex Seroconversion Panel by Western Blot (Paired)

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General Information

Lab Name
HSV Seroconversion by WB(Pair)
Lab Code
Epic Ordering
HSV Seroconversion by WB, Paired Sera

The detection of HSV1 and HSV2 IgG class antibodies by Western blot in acute and convalescent serum. For accurate seroconversion determination, the acute and convalescent samples should be drawn at least 12 -16 weeks apart.

HSV1 and HSV2 proteins from detergent lysates ("Bernstein's lysate") of HSV infected cells are separated by electrophoresis and transferred to nitrocellulose paper. The strips of paper or "blots" containing separated fixed proteins from either HSV-1 or HSV-2 are incubated with the patient's serum. Antibodies, which bind to the viral proteins, are detected by an enzyme-mediated color change. The pattern of staining on the two blots (HSV-1 and HSV-2) is dictated by the number and identity of the HSV proteins to which the patient's immune system has antibody.

This test is reported as:

  • HSV1 - Positive, Negative or Indeterminate for both the acute and convalescent sera
  • HSV2 - Positive, Negative or Indeterminate for both the acute and convalescent sera

Single sera or CSF, see Herpes Simplex Western Blot [HSWB]




Western blot

Reference Range
See individual components

Ordering & Collection

Specimen Type

Blood: 5 mL blood in GOLD TOP serum separator tube (SST).

Also acceptable: 5 mL blood in ORANGE TOP rapid serum tube (RST) or RED TOP tube

Handling Instructions
requested: 1 mL serum each
minimum: 1 mL serum each



Blood: Harvest sera from whole blood within 24 hours of collection. Sera may be stored at 2-8°C (ice pack) for up to 7 days. If testing will be delayed more than 7 days from collection freeze at -10°C or colder. Do not freeze/thaw.

Outside Laboratories:

Freeze samples at -10°C or colder. Ship on dry ice, do not freeze/thaw. If freezer and/or dry ice is not available, ship immediately at 2-8°C (ice pack), shipment time must not exceed 7 days from collection. Samples stored at 2-8°C greater than 7 days old will be rejected.

Unacceptable samples: Cadaver specimens or body fluids other than human sera.


LIS Dept Code
Clinical Virology (CVIR)
Performing Location(s)
Other Virology

Virology Laboratory, Ste 320
1616 Eastlake Ave E.
Seattle, WA 98102

Monday and Thursday.
Available STAT?

Billing & Coding

CPT codes
86695x2, 86696x2
Interfaced Order Code