Ketoconazole, Serum or Plasma

CPT: 80299
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Test Details


  • Nizoral®


Treatment of susceptible fungal infections, including candidiasis, oral thrush, blastomycosis, histoplasmosis, paracoccidiodomycosis, coccidioidomycosis, chromomycosis, chronic muccotaneous candidiasis, as well as recalcitrant cutaneous dematophytoses.


This test was developed, and its performance characteristics determined, by LabCorp. It has not been cleared or approved by the US Food and Drug Administration (FDA). The FDA has determined that such clearance or approval is not necessary.


Liquid chromatography/tandem mass spectrometry (LC/MS-MS)

Specimen Requirements


Serum (preferred) or plasma


1 mL

Minimum Volume

0.5 mL


Red-top tube or lavender-top (EDTA) tube


Transfer separated serum or plasma to a plastic transport tube. Do not use a gel barrier tube. The use of gel-barrier tubes is not recommended due to slow absorption of the drug by the gel. Depending on the specimen volume and storage times, the decrease in drug level due to absorption may be clinically significant.

Storage Instructions

Refrigerate. Stable for 14 days at room temperature, refrigerated, or frozen.

Causes for Rejection

Gel-barrier tube

Clinical Information


Drug Information Handbook. 24th ed. Hudson, OH: Wolters Kluwer Clinical Drug Information, Inc; 2015; 1144-1145.


Order Code Order Code Name Order Loinc Result Code Result Code Name UofM Result LOINC
700477 Ketoconazole, Serum/Plasma 10990-0 700478 Ketoconazole, Serum/Plasma ug/mL 10990-0

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