Prosthetic joint samples
- Patients should be antibiotic-free for at least 7 days before a biopsy is performed
- Contact the laboratory before sending and inform us if urgent or routine
- Please indicate the patient location (ward) on the request form
- Please send separate samples if histology is required
- Suspected prosthetic joint infections (PJI) should be investigated by sending up to 6 separate samples from the affected area. Swab and fluid samples may also be of value.
- Two or more samples growing the same organism is suggestive of prosthetic joint infection
- Each sample should be taken with a separate sterile scalpel.
- Microscopy is only of value in cases of acute prosthetic joint infection
- The laboratory is currently unable to accept whole prostheses either for storage or microbiological analysis
- See also:
Place excised material in a dry, sterile leak proof container
e.g. 60 mL widemouth container
DO NOT ADD FORMALIN
Clearly label each sample with the site
- Date of original surgery
- Intended first or second stage revision
- Recent, current and intended antibiotics
- Intended antibiotics in cement
Transport to the laboratory immediately. Refrigerate samples if transport is delayed.
Microscopy results (if performed) available on day of receipt
A preliminary report is issued after 2 - 4 days. All cultures undergo an extended incubation period for anaerobes and fungi.
Final culture results: up to 20 days
Page last reviewed: 28/01/2014