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Positive for Mycobacterium tuberculosis complex
Red-purple colour appears in both the T and C reading area.
The result is read as positive if area T shows red-purple colour that is lighter than or the same as,
or darker than the colour in area C.
Negative for Mycobacterium tuberculosis complex
A test is negative if red-purple colour appears in area C but not in area T.
Invalid test
A test is invalid if red-purple colour does not appear in area C.
If a test is invalid, repeat test using a new test plate, preferably from a newly opened foil pouch. If
the repeated test result is valid, enter this result on the case report form.
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