Laboratory results

All positive Blood cultures, CSFs, other sterile fluids and clinically important isolates are communicated promptly by the Consultant Microbiologist to the relevant clinical team, the ward sister, or the most senior person available who is dealing with the patient. Results from reference laboratories will be telephoned to the requesting wards, as deemed necessary by the consultant microbiologist. Provisional results may be obtained by telephone if available. Final results from all samples are available on Fusion or via GP links.

Reference ranges

The reference ranges of the following tests are given below.

  • Aspergillus precipitins
  • Avian precipitins

For Gentamicin and Vancomycin reference ranges click here

TestNormal rangeUnits
Aspergillus precipitins0-40mg/L
Avian Precipitins0-40mg/L
Budgie feathers0-40mg/L
Budgie Droppings0-40mg/L
Pigeon serum0-40mg/L
Pigeon feathers0-40mg/L
Pigeon droppings0-40mg/L

Turnaround Time

The turnaround time (TAT) for specific tests/specimen types is calculated from the date of receipt to the date of authorisation. Targets for each request type are set by the laboratory for the number of calendar days within which 90% of reports are issued. General bacteriology specimens are processed 7 days a week (including follow up work). Serology, parasitology and mycology requests are processed Monday to Friday. The turnaround times achieved for specific requests are shown in the table below.

Specimen/Request  type TAT*Specimen/Request type TAT*
MRSA1HIV serology2
Urine Microscopy0Hepatitis serology (A,B,C)3
Urine Culture2Syphilis1
Swabs/Fluids3Rubella serology2
Sputum3VZ/Measles/Mumps IgG3
Faeces Culture3Toxoplasma serology3
Norovirus1CMV serology3
Rota/Adenovirus1EBV (EBNA)3
CDT1ASO titre1
OCP4Gent/Vanc Assay1
Blood culture6Legionella/Pneumo Urine Ag0
Chlamydia/GC (molecular)3Chlamydia IF1
GC culture (Sexual Health)3 HIV viral loads6
CSF culture2Most common/vital referred tests
Mycology35Pneumocystis PCR7
TB culture60Meningo/Pneumococcal PCR10
Resistant Org. Screen (pre-op)3Respiratory PCR6
 Antenatal infectious disease screen 0Aspergillus precipitins15
Herpes PCR11
Syphilis confirmation11
HCV viral load14
Functional antibodies21

*Figures refer to turnaround times achieved April – Dec 2016.