Guide to Diagnostic TestsSearch Guide to Diagnostic TestsABCDEFGHIJKLMNOPQRSTUVWXYZABCDEFGHIJKLMNOPQRSTUVWXYZK+ (potassium)Kaposi sarcomaKappa and lambda free light chains with ratioKennedy disease/spinal and bulbar muscular atrophyKeratitisKetoacidosisKetones urineKidney function tests for therapeutic drug monitoringKlebsiella pneumoniaKleihauer-Betke testKOH (potassium hydroxide) preparationK-ras gene mutations