RDT Quiz A Q1: Difference between revisions

Revision as of 14:28, 25 November 2024

RDT Quiz A Q1

RDT tests use specific antibodies to identify the malaria species. Users often believe that these tests are equally effective for diagnosing all species, but this is not true.

Explanation of correct answer (click "Expand")

The different malaria species are detected with different sensitivity. The table below provides an overall summary of the sensitivity that can be expected for RDT tests (the specific section in the main section provides more detail).

*P.falciparum*
At high parasitaemia expect high sensitivity (90-95%). This declines when parasite levels are lower (45-70%)
*P.vivax*
Expect moderate to high sensitivity at high parasitaemia (70-90%). This declines markedly when parasite levels are lower (30-60%)
*P.ovale & P.malarae*
Generally sensitivity is poor (approximately half the sensitivity shown for P.vivax)
*P.knowlesi*
Reports suggest variable sensitivity that may depend on test used, RDTs are reported tp detect this species well when parasitaemia is high.

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@@ Line 13: / Line 13: @@
 {<span style="font-size:90%">Which of the following interpretions can be made? (select one or more options)</span></br></br>
 |type="[]"}
-{'''For which malaria species do appropriate RDT tests have best sensitivity ('''make two selections''')?'''</br></br>
+{<span style="font-size:90%">'''For which malaria species do appropriate RDT tests have best sensitivity ('''make two selections''')?'''</br></br>
 |type="[]"}
-+ ''P.falciparum''
++<span style="font-size:90%"> ''P.falciparum''
-+ ''P.vivax''
++<span style="font-size:90%"> ''P.vivax''
-- ''P.ovale''
+-<span style="font-size:90%"> ''P.ovale''
-- ''P.malariae''
+-<span style="font-size:90%"> ''P.malariae''
-- ''P.knowlesi''
+-<span style="font-size:90%"> ''P.knowlesi''
 </quiz>

RDT Quiz A Q1: Difference between revisions

From MalariaETC

Revision as of 14:28, 25 November 2024