Ham Test for Paroxysmal Nocturnal Hemoglobinuria



Acid hemolysis test for PNH.


To assist in diagnosing a rare condition called paroxysmal nocturnal hemoglobinuria (PNH), wherein red blood cells (RBCs) undergo lysis during and after sleep with hemoglobin excreted in the urine.

Patient Preparation

There are no food, fluid, activity, or medication restrictions unless by medical direction.

Normal Findings

(Method: Acidified hemolysis) No hemolysis seen.

Critical Findings and Potential Interventions


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