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Hepatitis B DNA / Viral Load(Sendaway Test)

Alternative Names:Hepatitis B DNA by PCR
Laboratory:Microbiology
Test Code:HBL
Medicare rebatable:Yes
Specimen Types:Serum
Blood
Container Types:
SST
EDTA 10 mL
SST
Adults Volume or Mass:6 mL
Collection & Request Instructions:

Test only performed on Hepatitis B surface antigen POSITIVE patients unless authorised by Microbiology Registrar.

Requests for urgent testing must be approved by the Microbiology Unit Head.

Transport Instructions:Room Temperature
Processing Instructions:Unopened Tube

Criteria for testing:

SEROLOGICAL PROFILE

ACTION

Hep B sAg positive

Perform tests as requested

 

Hep B sAg negative

Hep B cAb positive

Hep B sAb negative

Immunocompromised

(HIV positive, BMT, Heart/Lung Transplant, etc):

Perform tests as requested

Non-Immunocompromised:

Do NOT test unless approved by Microbiology Registrar.

Hep B sAg negative

Hep B cAb positive

Hep B sAb positive

Immunocompromised:

Perform tests as requested

Non-immunocompromised:

Do NOT test unless approved by Microbiology Registrar.

Hep B sAg negative

Hep B cAb negative

Hep B sAb negative

Do NOT test on ANYONE unless approved by Microbiology Registrar.

GASTRO CLINIC PATIENT

No serology performed

Perform tests as requested

ALL OTHER PATIENTS

No serology performed

Consult with Microbiology Registrar about performing Hepatitis B surface antigen serology first.

Assay Frequency:Fortnightly
External Laboratory:The Alfred Pathology Service (APS)
  External Laboratory details...
External Transport Instructions:Send at 4'C with Ice Pack
Additional Notes:

This test is used in conjunction with, rather than instead of,  the regular serologic tests. It is mainly used to monitor antiviral therapy in patients with chronic HBV infections.