Hepatitis B Qualitative PCR, Tissue
General Information
Lab Name
Hepatitis B Qualitative PCR, Tissue
Lab Code
HBVQLT
Epic Name
Hepatitis B Qualitative PCR, Tissue
Description
The detection of Hepatitis B virus (HBV) performed using a modified version of the FDA-approved Hologic Aptima HBV assay. This in vitro nucleic acid amplification test utilizes real-time Transcription-Mediated Amplification (TMA) technology on the Panther system to detect HBV DNA across genotypes A, B, C, D, E, F, G, and H.
The assay targets two highly conserved regions within the polymerase and surface genes, enhancing its tolerance to potential mutations. It is standardized to the 3rd WHO International Standard for Hepatitis B Virus (NIBSC code: 10/264).
The lower limit of detection (LoD), defined as the lowest viral concentration that yields a positive result in 95% of replicates has not been established for certain specimen types, including tissue biopsies, paraffin-embedded tissues, bone marrow, swabs, or cellular fluids. Results are reported as Not Detected or Positive.
The portion of the assay was developed, and its performance characteristics were determined, by the University of Washington Department of Laboratory Medicine and Pathology. It has not been cleared or approved by the U.S. Food and Drug Administration.
For Blood, see Hepatitis B DNA, Quantitative [HBVQNT].
Synonyms
HBV DNA Qualitative
Components
| Code | Name |
|---|---|
| HBVQLS | Hepatitis B Qualitative PCR Specimen Type |
| HBVQLR | Hepatitis B Qualitative PCR Result |
| HBVQLI | Hepatitis B Qualitative PCR Interpretation |
Interpretation
Method
Real-time Polymerase Chain Reaction
Reference Range
See individual componentsGuidelines
Ordering & Collection
Specimen Type
Collection
Tissue Biopsy: Pea-sized amount in a sterile tube or universal transport media (UTM).
Paraffin Tissue: DO NOT SEND SLIDES. Slice 3 to 4 scrolls that are 5 to 50 microns thick into a sterile tube.
Bone Marrow: 5 mL of blood in an EDTA (lavender top) tube; no heparin aspirate in the syringe.
Swab: In a sterile tube or universal transport media (UTM).
Cellular Fluid: 1 mL in a sterile tube.
Unacceptable Samples: Buffy coat collected with a heparin syringe; paraffin slides.
Handling Instructions
Bone Marrow: 5 mL of bone marrow in an EDTA (lavender top) tube should be sent to the laboratory at room temperature within 24 hours of collection.
Quantity
requested: See Collection
minimum: 0.5 mL
Processing
Tissue Biopsy: Freeze at -20°C or colder and ship on dry ice. If a freezer and/or dry ice is not available, ship immediately at 2 to 8°C (ice pack). Samples may be stored at 2 to 8°C (ice pack) for up to 48 hours post-collection. Samples stored at 2 to 8°C for more than 48 hours will be rejected. Do not freeze and thaw.
Paraffin Tissue: Ship at room temperature.
Bone Marrow: Ship at room temperature within 24 hours of collection.
Swabs: Freeze at -20°C or colder. Ship on dry ice. If a freezer and/or dry ice is not available, ship immediately at 2 to 8°C (ice pack). Samples may be stored at 2 to 8°C (ice pack) for up to 48 hours post-collection. Samples stored at 2 to 8°C for more than 48 hours will be rejected. Do not freeze and thaw.
Cellular Fluid: Freeze at -20°C or colder and ship on dry ice. If a freezer and/or dry ice is not available, ship immediately at 2 to 8°C (ice pack). Samples may be stored at 2 to 8°C (ice pack) for up to 48 hours post-collection. Samples stored at 2 to 8°C for more than 48 hours will be rejected. Do not freeze and thaw.
Outside Laboratory:
Buffy Coat: Separate the buffy coat from bone marrow within 24 hours of collection. Freeze at -20°C or colder.
Tissue/Cellular Fluid/Swab: Freeze at -20°C or colder and ship on dry ice. If a freezer and/or dry ice is not available, ship immediately at 2 to 8°C (ice pack). Samples may be stored at 2 to 8°C (ice pack) for up to 48 hours post-collection. Shipment time must not exceed 48 hours from collection if stored at 2 to 8°C. Samples stored at 2 to 8°C for more than 48 hours will be rejected. Do not freeze and thaw.
Performance
LIS Dept Code
Central Lab Virology (RVIR)
Performing Location(s)
| CL |
Division of Infectious Disease Diagnostics (DIDD) - Virology
1601 Lind Ave SW |
Phone: 206-685-6656 option 8 |
|---|
Frequency
Wednesday. Results following Friday.
Available STAT?
No