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CBNAAT Maintenance Record Keeping under NTEP
Learning ObjectivesExternal Quality Assurance for CBNAAT
Under the National TB Elimination Program (NTEP), each Cartridge-based Nucleic Acid Test (CBNAAT) site needs to keep a maintenance record for the instrument.
Cleaning and disinfecting the system components is crucial for proper CBNAAT maintenance. The tasks and frequency are shown in the table below.
TASK | FREQUENCY |
---|---|
Clean work area | Daily |
Close all module doors | Daily |
Discard used cartridges | Daily |
Power down the CBNAAT instrument | Weekly |
Power down the CBNAAT computer | Weekly |
Archive tests | Monthly |
Purge tests | Monthly |
Replace the fan filters | Monthly |
Clean plunger rod and cartridge bay | Quarterly |
Clean the instrument surfaces | Quarterly |
Perform annual instrument maintenance | Annually |
Print system log report | As necessary |
Back up database | As necessary |
For routine surface cleaning 70% ethanol is used; while a final concentration of 1:10 dilution of Sodium hypochlorite is used for disinfection of different parts of the CBNAAT instrument followed by removing bleach residue with 70% ethanol.
The logs for the maintenance of records for CBNAAT is shown in Figure 1.
Figure 1: Maintenance Log Sheet
The maintenance log sheet is also provided by the vendor as shown in Figure 2. The monthly log for maintenance records can be obtained from the CBNAAT System Operator Manual CDROM that can be copied and used.
Figure 2: Maintenance Log Sheet provided by the Vendor
Resources
- Guidelines for Programmatic Management of Drug-resistant Tuberculosis in India, MoHFW, 2017.
- GeneXpert Dx System Operator Manual.
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