What nonspecific lab findings are seen in cases of diphtheria?

Updated: Jan 18, 2019
  • Author: Bruce M Lo, MD, MBA, CPE, RDMS, FACEP, FAAEM, FACHE; Chief Editor: Jeter (Jay) Pritchard Taylor, III, MD  more...
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CBC may show moderate leukocytosis.

Urinalysis (UA) may demonstrate transient proteinuria.

Serum antibodies to diphtheria toxin prior to administration of antitoxin: Low levels cannot exclude the possibility of the disease; high levels may protect against severe illness (concentrations of 0.1 to 0.01 IU are thought to confer protection). [10]

Serum troponin I levels seem to correlate with the severity of myocarditis. [23]

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