Microbiology Reporting Techniques: Introduction, List of Templates, and Keynotes

Introduction of Microbiology Reporting Techniques

Microbiology Reporting  Techniques are useful to provide similar report formats from different Microbiology Laboratory platforms that should sound Microbiologically clear and concise. It should also be compatible with International Guidelines of Clinical Microbiology Practice like the Clinical & Laboratory Standards Institute (CLSI) previous National Committee for Clinical Laboratory Standards (NCCLS) and the European Committee on Antimicrobial Susceptibility Testing (EUCAST) Guidelines.

Microbiology Reporting Techniques Templates

Culture Negative Reports

Urine Culture:  No growth after 24 hours of incubation at 37°C.

Pus/ sterile body fluids Culture: No growth after 48 hours of incubation at 37°C.

Blood Culture: No growth after 5 days of incubation at 37°C.

Sputum: No pathogen isolated after 48 hours of incubation at 37°C.

Stool: No enteric pathogen isolated.

Culturev Positive Reports

Urine

105CFU/mL of E. coli isolated.

105 CFU/mL of Staphylococcus saprophyticus isolated.

Other than Urine except for blood specimens

Heavy growth of Staphylococcus aureus isolated.

Light growth of Staphylococcus aureus isolated.

Moderate growth of Methicillin-resistant Staphylococcus aureus (MRSA) isolated.

Heavy growth of Escherichia coli isolated.

H. growth of Klebsiella pneumoniae isolated.

Heavy growth of Enterococcus species isolated.

Heavy growth of Enterococcus species isolated.

Light growth of Pseudomonas aeruginosa isolated.

Heavy growth of Pseudomonas aeruginosa isolated

Moderate growth of Proteus vulgaris isolated.

Blood Culture (no need for grading)

Salmonella Typhi/ Salmonella enterica serotype Typhi isolated.

Klebsiella pneumoniae isolated.

Keynotes on Microbiology Reporting Techniques

  • Urine-Contamination, please repeat the mid-stream urine (MSU) sample.
  • A non-Ideal smear of Sputum-Sputum for Gram Stain

Pus cells<25/LPF

Epithelial cells>10/LPF

Organism: Normal Upper Respiratory Tract Flora Seen

  • Ideal smear-Sputum for Gram Stain

Pus cells>25/LPF

Epithelial cells<10/LPF

Organism: Numerous Gram-negative bacilli seen

  • Body fluids-Gram stain

Pus cell: not seen

Organism: Not seen

  • In case of reporting blood culture and sensitivity- No growth after 48 hours of incubation at 37°C. There should be template note like-Further incubation will be up to 3 days. If there is any pathogen detected, the patient or his/her visitor will be contacted for the final report.
  • Remaining templates can be added according to facing the situations.

Contd…

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