(mb GeneXpert) TEST HCV viral load, cartridge GXHCV-VL-CE-10
Valid Article
(mb GeneXpert) TEST HCV viral load, cartridge
CAUTION
This test (= 1 cartridge) is worded and codified by unit to make the order easier, but it is always packaged in kit of 10.
Definition
The Xpert HCV viral load assay is performed on the GeneXpert. It is cartridge based and is a quantitative in vitro diagnostic test designed to detect HCV nucleic acids using human serum or plasma (EDTA). The test utilizes automated reverse transcriptase polymerase chain reaction (RT-PCR) using fluorescence to detect the RNA of interest for the quantitation of HCV.
The Xpert HCV viral load quantifies HCV genotypes 1-6 over the range of 10 to 100,000,000 IU/ml. The assay is intended for use as an aid in the management of HCV infected patients undergoing antiretroviral therapy. The test measures HCV RNA levels at baseline and during treatment and can be used to predict sustained and non-sustained virological responses to antiretroviral therapy.
Results from Xpert HCV viral load may also be used to confirm HCV infection in the anti-HCV positive individuals. In anti-HCV positive individuals who test negative for HCV RNA, use of another anti-HCV serological assay may be considered for distinction between true HCV exposure and biologic false positivity. Repeat HCV RNA testing may be indicated in cases that have had HCV exposure in the last 6 months or have clinical evidence of HCV disease.
This assay is not intended to be used as a blood donor screening test for HCV.
Specifications
Technical specifications
The Xpert® HCV Viral Load (GXHCV-VL-CE-10) contains sufficient reagents for 10 specimens.
Each kit contains following:
- 10 HCV Viral load cartridges (GXHCV-VL-CE-10) with integrated reaction tubes
- Bead 1, bead 2, bead 3 (freeze dried): 1 of each per cartridge
- Lysis reagent (Guanidium Thiocyanate): 2.0ml per cartridge
- Rinse reagent: 0.5ml per cartridge
- Elution reagent: 1.5ml per cartridge
- Binding reagent: 2.4ml per cartridge
- Proteinase K reagent: 0.48ml per cartridge
Beads are solid white components in cartridges; reagents are clear liquids which are primarily buffered in aqueous solutions.
- 10 Disposable 1 ml transfer pipettes
- 1 CD containing the package insert
Key characteristics:
- Sample: EDTA plasma or serum
- Time to result: 1h45min
- Internal QC: Sample processing control (SPC): armored RNA in the form of a dry bead that is included in each cartridge to identify adequate processing of the sample virus.
Packaging & Labelling
1 kit = 10 tests
Instructions for use
Follow the instructions for use
Please consult the “Updated laboratory procedures, 2022” available online via the Laboratory working Group sharepoint page: Laboratory Procedures and Resources.
https://msfintl.sharepoint.com/sites/msfintlcommunities/LabWG/SitePages/Laboratory-Manual-page.aspx
For offline access, contact your laboratory advisor.
Storage
- Store at 2 - 28°C
- Shelf life: 12 months
- Guaranteed minimum remaining shelf life at delivery: 1/3 of total shelf life
Waste management
The cartridge contains guanidium thiocyanate as the lysis reagent. This chemical is highly toxic and all care should be taken when using the cartridges in case of spills etc.
Please note that as this chemical is also highly toxic to aquatic life, it should optimally be disposed of by incineration. No liquids from the cartridge should be released into the environment.
Classification EC Regulation N° 1272/2008
Acute toxicity oral 5
H302 | Harmful if swallowed |
H320 | Causes eye irritation |
H313 | May be harmful in contact with skin |
MSF requirements
Reserved for programmes with the management of patients with HCV.