Dedicated to protecting the health and safety
of Nebraskans through diagnostic laboratory
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Testing Results
IMPORTANT! Sites requesting testing must have approval from the appropriate state or local health department before submitting specimens. Approval must be sent to NPHL by email at or by calling (402) 559-9444.

A Special Microbiology Form must accompany the specimens. Some tests require additional forms and patient history. This will be listed below when applicable. When requested, testing will not be performed without all required information.

Please call NPHL Client Services at (402) 559-2440 or toll free at (866) 290-1406 for further clarification.


  Test: Corynebacterium diphtheriae Culture 
  Synonym: Diphtheriae Culture 
  Method: Standard reference procedure for C. diphtheriae culture and identification 
  Availability: Daily; results in 72 hours 
  Specimen: Swab of nasopharynx plus swab of throat at site of membrane, inflammation, or wound 
  Collection Device: Culturette swab with Stuart's or Amies media 
  Storage/Transport: Ambient; must be received by lab within 24 hours of collection 
  Unacceptable: Specimens older than 24 hours; refrigerated or frozen specimens 
  Specimen Stability: Stable at ambient 
  Reference Interval: Negative 
  Reportable Disease:  
  Comments: If collected from wound, clean wound first 
  Revised: 2/13/2012 


If you have questions about proper specimen collection, please call NPHL Client Services at (402) 559-2440 or toll free at (866) 290-1406.