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leukocytter i urinen

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Diagnostik med stiksundersøgelse<br />

LN stiks: nitrit<br />

• Enterobakterier (E. coli, Klebsiella, Proteus og andre)<br />

reducerer nitrat i <strong>urinen</strong> (fra protein i føden) til nitrit, som<br />

påvises med nitritstiks. Gram positive kokker<br />

(stafylokokker og streptokokker) reducerer ikke nitrat.<br />

• Forudsætning for positiv nitrit:<br />

1) bakterien kan reducere nitrat<br />

2) tilstrækkelig tid til at bakterien kan nå at reducere nitrat.<br />

<strong>urinen</strong> skal stå i blæren 2-4 timer.

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