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Viral Serology

Item Value
Approval req'd? No
Available Stat? No
Test code IDAB
Performed by San Francisco Public Health Laboratory
Sendout? Yes
Collection Instructions Submit paired sera, the acute-phase specimen collected no later than 7 days post-onset and a 2nd specimen 2-3 weeks later.

The physician must complete a form for Special Serology, Click here for form
Container type Gold top, CSF tube or sterile collection tube
Amount to Collect
Blood 10 mL
CSF 5 mL
Sample type Serum, CSF
Preferred volume
Serum 5 mL
CSF 5 mL
Min. Volume 2.5 mL serum
3 mL serum CSF
Processing notes Refrigerate sample
Normal range Negative
Synonyms TORCH; Viral titers; Acute serum titer
Turn around times Test performed Wednesday. Results available Friday.
Additional information CSF not generally useful except in SSPE or Rubella

Tests are not performed until the convalescent specimen is received for simultaneous assay, except for possible Western or Saint Louis Equine Encephalitis during the summer-fall encephalitis season, when IgM antibody will be sought in the initial specimen, or where immune status is being assessed [see Rabies Antibody (Neutralizing)-response to vaccine, Rubella Antibody and Varicella-zoster Antibody (specify for immune status). Also see table "Viral Serology: Interpretation of Test Results" following the table "Viral Culture: Specimen Collection ...".

Aseptic Meningitis & Encephalitis Group:
Usually includes CF Antibody testing for Herpes simplex, Mumps, Measles and Rubella (in childhood) and Adenovirus (in patients under 18). Requests for LCM, Poliovirus or Arbovirus titers must be accompanied by appropriate history and are forwarded to State Laboratory. IF ARBOVIRUS INFECTION IS SUSPECTED DURING THE SUMMER-FALL ENCEPHALITIS SEASON, SUBMIT THE FIRST SPECIMEN WITHOUT DELAY FOR TESTS TO DETECT IgM ANTIBODY, even though the convalescent serum has not yet been received.

Exanthem Group: Usually includes antibody testing for Herpes simplex, Measles, Mumps and Varicella-zoster.

Respiratory Group: Usually includes antibody tests to Adenovirus, Influenza A and B (in season), Mycoplasma pneumoniae, Parainfluenza 1-3 (in children under 3) and Respiratory syncytial virus (in patients under 18).
Last Updated 11/21/2013 1:00:44 PM
Entry Number 996
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