https://haematologyetc.org/index.php?action=history&feed=atom&title=Prozone-like_effect 2026-11-05T21:57:51Z Revision history for this page on the wiki MediaWiki 1.41.1 https://haematologyetc.org/index.php?title=Prozone-like_effect&diff=3517&oldid=prev 2025-03-18T08:41:29Z

<p></p> <table style="background-color: #fff; color: #202122;" data-mw="interface"> <col class="diff-marker" /> <col class="diff-content" /> <col class="diff-marker" /> <col class="diff-content" /> <tr class="diff-title" lang="en"> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">← Older revision</td> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 09:41, 18 March 2025</td> </tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l4">Line 4:</td> <td colspan="2" class="diff-lineno">Line 4:</td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>&lt;span style=&quot;font-size:90%&quot;&gt;[[MalariaETC Index|Main Malaria Index]]&#039;&#039;&lt;/span&gt;&lt;/br&gt;</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>&lt;span style=&quot;font-size:90%&quot;&gt;[[MalariaETC Index|Main Malaria Index]]&#039;&#039;&lt;/span&gt;&lt;/br&gt;</div></td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>&lt;span style=&quot;font-size:90%&quot;&gt;&gt;[[Rapid diagnostic tests (RDTs)|RDT main page]]&#039;&#039;&lt;/span&gt;&lt;/br&gt;</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>&lt;span style=&quot;font-size:90%&quot;&gt;&gt;[[Rapid diagnostic tests (RDTs)|RDT main page]]&#039;&#039;&lt;/span&gt;&lt;/br&gt;</div></td></tr> <tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>&lt;span style="font-size:90%"&gt;&gt;&gt;[[Interpretation guide: <del style="font-weight: bold; text-decoration: none;">MULTI </del>BAND tests|<del style="font-weight: bold; text-decoration: none;">Multi </del>Band Tests]]''&lt;/span&gt;&lt;/br&gt;</div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>&lt;span style="font-size:90%"&gt;&gt;&gt;[[Interpretation guide: <ins style="font-weight: bold; text-decoration: none;">SINGLE </ins>BAND tests|<ins style="font-weight: bold; text-decoration: none;">Single </ins>Band Tests]]''&lt;/span&gt;&lt;/br&gt;</div></td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>&lt;span style=&quot;font-size:90%&quot;&gt;&gt;&gt;&gt;Current page: &#039;&#039;&#039;The prozone-like effect&#039;&#039;&#039;&lt;/span&gt;</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>&lt;span style=&quot;font-size:90%&quot;&gt;&gt;&gt;&gt;Current page: &#039;&#039;&#039;The prozone-like effect&#039;&#039;&#039;&lt;/span&gt;</div></td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>----</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>----</div></td></tr> </table>

Admin https://haematologyetc.org/index.php?title=Prozone-like_effect&diff=3516&oldid=prev 2025-03-18T08:40:58Z

<p>Created page with &quot;{{DISPLAYTITLE:&lt;span style=&quot;position: absolute; clip: rect(1px 1px 1px 1px); clip: rect(1px, 1px, 1px, 1px);&quot;&gt;{{FULLPAGENAME}}&lt;/span&gt;}} ---- &#039;&#039;&#039;Navigation&#039;&#039;&#039;&lt;/br&gt; &lt;span style=&quot;font-size:90%&quot;&gt;<a href="/index.php?title=MalariaETC_Index" title="MalariaETC Index">Main Malaria Index</a>&#039;&#039;&lt;/span&gt;&lt;/br&gt; &lt;span style=&quot;font-size:90%&quot;&gt;&gt;<a href="/index.php?title=Rapid_diagnostic_tests_(RDTs)" title="Rapid diagnostic tests (RDTs)">RDT main page</a>&#039;&#039;&lt;/span&gt;&lt;/br&gt; &lt;span style=&quot;font-size:90%&quot;&gt;&gt;&gt;<a href="/index.php?title=Interpretation_guide:_MULTI_BAND_tests" title="Interpretation guide: MULTI BAND tests">Multi Band Tests</a>&#039;&#039;&lt;/span&gt;&lt;/br&gt; &lt;span style=&quot;font-size:90%&quot;&gt;&gt;&gt;&gt;Curr...&quot;</p> <p><b>New page</b></p><div>{{DISPLAYTITLE:&lt;span style=&quot;position: absolute; clip: rect(1px 1px 1px 1px); clip: rect(1px, 1px, 1px, 1px);&quot;&gt;{{FULLPAGENAME}}&lt;/span&gt;}}<br /> ----<br /> &#039;&#039;&#039;Navigation&#039;&#039;&#039;&lt;/br&gt;<br /> &lt;span style=&quot;font-size:90%&quot;&gt;[[MalariaETC Index|Main Malaria Index]]&#039;&#039;&lt;/span&gt;&lt;/br&gt;<br /> &lt;span style=&quot;font-size:90%&quot;&gt;&gt;[[Rapid diagnostic tests (RDTs)|RDT main page]]&#039;&#039;&lt;/span&gt;&lt;/br&gt;<br /> &lt;span style=&quot;font-size:90%&quot;&gt;&gt;&gt;[[Interpretation guide: MULTI BAND tests|Multi Band Tests]]&#039;&#039;&lt;/span&gt;&lt;/br&gt;<br /> &lt;span style=&quot;font-size:90%&quot;&gt;&gt;&gt;&gt;Current page: &#039;&#039;&#039;The prozone-like effect&#039;&#039;&#039;&lt;/span&gt;<br /> ----<br /> <br /> {| class=&quot;wikitable&quot; style=&quot;border-style: solid; border-width: 4px; border-color:green&quot;<br /> |colspan=&quot;1&quot; style = &quot;font-size:110%; color:blasck; background: FFFAFA&quot;|&lt;span style=&quot;color:navy&gt;&#039;&#039;&#039;The prozone-like (postzone) phenomenon&#039;&#039;&#039;&lt;/span&gt;<br /> <br /> <br /> The prozone-like or &quot;postzone&quot; phenomenon (the term postzone effect is preferred in this context as prozone refers to excess antibody, while postzone refers to excess antigen) is a very rare, but recognised effect that causes false negative results of tests. <br /> <br /> ----<br /> <br /> Most often the prozone effect is seen with HRP2 antigens. This effect means that where these is a &#039;&#039;&#039;very high parasitaemia&#039;&#039;&#039; (causing excess HRP2 antigen to be present) test can appear negative. It is thought that the presence of excess antigen means that the formation of appropriate antibody-antigen complexes is prevented so that the test does not function correctly.</div>

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