TrueNAT MTB Assay Results Interpretation: Detection of Mycobacterium tuberculosis and RIF Resistance

On completion of test run, the Test Result Screen displays the results for:

• Detection of Mycobacterium tuberculosis (Truenat MTB)
  • “DETECTED” for Positive result, Cycle Threshold (Ct) value, Colony Forming Units per milliliter (CFU/ ml)
  • “NOT DETECTED” for Negative result
  • “Valid”/ “Invalid” for test validity based on amplification of Internal Positive Control (IPC)
  • “Error” for test failure

• Detection of Rif Resistance (Truenat MTB-Rif Dx)
  • “Rif Resistance Detected” if mutations to Rif are detected
  • “Rif Resistance Not Detected” if mutations to Rif are not detected
  • “Indeterminate” when test did not determine resistance to Rif
  • “Error” for test failure

Resources

• Truenat MTB Pack Insert.
• Truenat MTB Rif Pack Insert.

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