Mycobacterial PCR

Mycobacteria PCR

Molecular Microbiology

Broad range bacterial PCR is a powerful technique that can detect an extensive range of bacterial pathogens, however it has reduced sensitivity compared to targeted real-time PCR. For this reason our testing strategy combines broad-range and targeted bacterial PCRs to maximise the diagnosis of infection. Specimens for which broad-range bacterial PCR is requested will additionally be tested by relevant targeted PCR depending on specimen type and/or clinical history, including where available real-time PCR targeting the most common causative organisms. This combined approach benefits from the broad range nature of 16S rRNA gene PCR and the sensitivity of targeted real-time PCR; using them together increases the diagnostic yield for bacterial infections (Harris & Brown, 2022). Harris KA and Brown JR (2022). Diagnostic yield of broad-range 16S rRNA gene PCR varies by sample type and is improved by the addition of qPCR panels targeting the most common causative organisms, Journal of Medical Microbiology¸71 (12). (https://doi.org/10.1099/jmm.0.001633) If you do not require additional targeted real-time PCRs, for example if you have already performed these in-house, please indicate this clearly on the request form

We accept any fluid or tissue from a normally sterile site, including formalin-fixed paraffin embedded (FFPE) tissue and blood culture fluid. Blood culture fluids are only suitable if they have flagged positive or if organisms have been seen on gram stain. Specimens should be sent in a sterile, dry container with no added fluids or transport media. Minimum volume required: Fluids (excluding blood culture fluid) 500 μL; Tissue 50 mg; FFPE tissue 10 rolls (10 μm); Blood culture fluid 1 mL

Not applicable

7 days. FFPE and blood culture fluid samples are batch-processed weekly, therefore TAT is increased for these sample types. Please note that our service runs Monday-Friday

TB PCR / Non-tuberculous mycobacteria

Yes