Alternative names, keywords


Samples required

Clotted blood (gold cap, 5 mL tube). Smaller tubes are available for paediatric samples.

For appropriate sampling times please see BSUH antimicrobial guidelines (published on the BSUH Pharmacy Microguide).

Test indications


Factors affecting test performance/ results

As with any assay employing mouse antibodies, the possibility exists for interference by human anti-mouse antibodies (HAMA) in the sample, which could cause falsely lowered results.

Unspecific binding of heterophilic antibodies from the sample to glucose-6-phosphate dehydrogenase of the reagent may lead to falsely lower test results in very rare cases.

In very rare cases, gammopathy, in particular type IgM (Waldenström’s macroglobulinemia), may cause unreliable results.

Results should always be assessed in conjunction with the patient’s medical history, clinical examination and other findings.

Reference range

See BSUH antimicrobial guide.

Further advice is available from the Antimicrobial Specialist 07623-974334

Out-of-hours please contact the on-call pharmacists at the north or south sites of the Trust (via switchboard).

Turnaround time

Same day (within 2h if urgent)


Biochemistry (Automation)