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RDT Quiz A Q4

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RDT Quiz A Q2


Shown below is an RDT test. This uses a pan-malarial antibody (labelled Pan) and a P.falciparum species-specific antibody (labelled Sp). The test has been used to assess a patient and the positive bands are shown on the figure.

Which of the following interpretions can be made? (select one or more options)

1. Consistent with a single species P.falciparum infection
2. Consistent with a single species non-P.falciparum infection
3. Consistent with a dual species infection including P.falciparum
4. Consistent with a dual species infection not including P.falciparum
5. Suggests P.falciparum with HRP2 gene-deletion
6. An unreportable test


Explanation of correct answer (click "Expand")
When no band appears in the control area (black arrow) the test is ALWAYS invalid:

Irrespective of whether any other bands are present, this is always an invalid test: do not interpret. Report as failed test
Action:

  • Repeat the test
  • Consider the reasons for test failure


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