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Public Health Laboratory

    

Contact Information
Los Angeles County
Department of Public Health
Public Health Laboratory
12750 Erickson Avenue
Downey, California 90242

Laboratory Director
J. Michael Janda, Ph.D, D(ABMM)

Phone: (562) 658-1330
Fax: (562) 401-5999

Monday - Friday
8:00 AM to 5:00 PM
Saturday
8:00 AM to 4:30 PM
Public Health Laboratory - Virology Test Information

0136 - CELLULAR IMMUNE PANEL:
The panel identifies the T-lymphocyte populations and calculates the absolute counts. Absolute counts are determined for helper/inducer T lymphocytes (CD4), the suppressor/cytotoxic lymphocytes (CD8) and the total T lymphocytes (CD3). A CD4/CD8 helper/suppressor T-lymphocyte ratio, a CD4/CD3 ratio and a CD8/CD3 ratio are reported. The quantitation of T cell subsets is useful for the evaluation of various immunodeficiency disorders, acquired immunodeficiency disease and evaluation of antiviral therapy.

0138 - CHLAMYDIA TRACHOMATIS CULTURE:
Specimens are plated under centrifugation onto cyclohexamide treated McCoy cell monolayers. Cultures are stained after 48 hours with polyclonal antisera for inclusion bodies characteristic of C. trachomatis.

0182 - HEPATITIS A IgM ANTIBODY, EIA, SERUM:
A positive result indicates recent exposure to HAV. The IgM response will start approximately 2 month after exposure and continues to be measurable for up to 8 months after exposure.

0183 - HEPATITIS B CORE ANTIBODY, EIA, SERUM:
Hepatitis B core antibody (HBcAb) is present in serum after the appearance of hepatitis B surface antigen (HBsAg) and before the appearance of hepatitis B surface antibody (HBsAb). In the absence of HBsAg and HBsAb, HBcAb may be the only serologic marker of recent hepatitis B infection and potentially infectious blood.

0185 - HEPATITIS B SURFACE ANTIGEN, EIA, SERUM:
The hepatitis B surface antigen (HBsAg) is present in acute hepatitis B infection or in chronic carriers of hepatitis B. HBsAg becomes detectable after the incubation stage of the virus that generally lasts 4-12 weeks after exposure.

0186 - HEPATITIS B PANEL, EIA, SERUM:
Panel includes: Hepatitis B Core Antibody, EIA; Hepatitis B Surface Antibody, EIA and Hepatitis B Surface Antigen, EIA.

0187 - HEPATITIS ACUTE PANEL, SERUM:
Panel includes: Hepatitis C Antibody, EIA; Hepatitis B Surface Antigen, EIA and Hepatitis A IgM Antibody, EIA.

0188 - HEPATITIS CUSTOM PANEL, SERUM:
Panel includes: Hepatitis A IgM, EIA; Hepatitis B Core Antibody, EIA; Hepatitis B Surface Antigen, EIA and Hepatitis B Surface antibody, EIA.

0189 - HEPATITIS B SCREENING PANEL, SERUM:
Panel includes: Hepatitis B Surface Antigen, EIA and Hepatitis B Surface Antibody, EIA

0202 - HIV-1 SCREENING ANTIBODY, ELISA, SERUM:
Initial testing is done with ELISA techniques using a whole virus lysate antigen/ synthetic peptides. Positive sera are confirmed using an alternative methodology, i.e., Western blot or IFA.

0203 - HIV-1, PCR, PLASMA, QUALITATIVE:
Centrifuge to separate plasma within 6 hours of draw. Refrigerate to store.

0291 - HIV-1, PCR, PLASMA, QUANTITATIVE:
Also known as.Viral Load Test or HIV-1 RNA PCR. Centrifuge to separate plasma within 6 hours of draw. Refrigerate to store.

0204 - IMMUNOCOMPROMISED VIRAL PANEL, SERUM:
Panel includes: Adenovirus Antibody, CF; Cytomegalovirus IgG and IgM Antibody Panel, IFA; Epstein-Barr Viral Capsid Antigen Antibody Panel, IFA; Herpes simplex, IFA and Varicella-Zoster IgG Antibody, IFA

0239 - POLIOVIRUS ANTIBODY, NEUTRALIZATION, SERUM:
This sensitive procedure is recommended for vaccine response testing and type-specific serodiagnosis of recent Poliovirus infection.

0241 - RABIES EXAMINATION, BIOPSY:
Test includes the fluorescent examination of a specimen smear.

0243 - RESPIRATORY SYNCYTIAL VIRUS (RSV) ANTIGEN DETECTION, DFA:
This procedure can detect RSV in specimens taken later that 5 days post onset, when viral isolation becomes increasingly less sensitive due to neutralizing antibodies in respiratory secretions.

0254 - ROTAVIRUS ANTIGEN DETECTION, EIA:
Rotaviruses are the major cause of epidemic viral gastroenteritis in infants and young children worldwide, with peak incidence between mid-December and mid-February. They are also associated with a severe sporadic gastroenteritis of infants and young children.

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