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Diphtheria Immunity

Alias: N/A

Discipline: Virology

Test information: Diphtheria is a rare condition in developed countries with successful vaccination program but remains a significant problem with high mortality in developing countries. Used to determine immunity status. This may help in the investigation of defects of humoral immunity or following immunosuppression.

Availability: Referred to National Infection Service Reference Laboratories Colindale : Monday - Friday during routine hours: 08:45 - 17:15.

Turnaround Time: 21 Days upon receipt at National Infection Service Reference Laboratories Colindale

Specimen Type(s)
  • Clotted blood;
Other Acceptable Specimen Type(s)
Specimen Container - Adult
  • Gold Top SST BD;
Specimen Container - Paediatric
  • N/A;
  • Diphtheria antibodies;
Part of a test profile?
Volume (min) of sample to be sent to laboratory
Patient Preparation, Sample Handling and Transport
  • Minimum-clotting time 30 minutes.
  • Specimens should be transported to the laboratory as soon as possible.
  • Outside of normal hours samples should be refrigerated (2 °C to 8 °C).
  • Please supply details of vaccination history (if known) with all requests plus relevant clinical details.
Maximum add on time
Units and Reference Ranges / Interpretation
Units: IU/mL
Individual is susceptible: <0.016 IU/mL
Levels conferring some protection: 0.016 - 0.09 IU/mL
Protective levels: 0.1 - 0.9 IU/mL
Levels conferring long-term protection: >1 IU/mL
UKAS number
UKAS accredited test?

If you have any queries about a test or results interpretation please contact us.

Last updated: 30-05-2023