✍️ Edited by Farhan Ahmed, Editor, MedTestBD · Last updated: August 2026
What is a Pus Culture & Sensitivity Test?
A Pus for Culture and Sensitivity (C/S) test grows bacteria from pus collected at an infected wound or abscess site to identify the exact causative organism and determine which antibiotics are effective against it. While a Gram stain gives a rapid preliminary result within hours, culture and sensitivity provides the definitive identification and a precise antibiotic guide — usually within 48–72 hours. It is the most important test for managing serious wound and skin infections.
Why is the Pus C/S Test Done?
- To identify the specific bacteria causing wound infections, abscesses, cellulitis, or diabetic foot ulcers
- To detect antibiotic-resistant organisms — particularly MRSA (Methicillin-Resistant Staphylococcus aureus), which requires specific treatment
- To guide antibiotic choice when empirical treatment is not working
- To investigate post-operative wound infections
- To evaluate chronic or non-healing wounds where mixed bacterial infection is common
- To assess deep tissue infections, osteomyelitis (bone infection), or joint infections
Understanding Pus C/S Results
| Result | Interpretation |
|---|---|
| No growth | No significant pathogen detected — may indicate inadequate sample, prior antibiotics, or non-bacterial cause |
| Single organism grown | Primary pathogen identified with full sensitivity panel |
| Mixed growth | Multiple organisms — common in chronic wounds and diabetic ulcers; sensitivity guides treatment |
| MRSA detected | Requires vancomycin or linezolid — standard beta-lactam antibiotics will not work |
The sensitivity report lists each antibiotic tested as Sensitive (S), Intermediate (I), or Resistant (R). Choose antibiotics marked Sensitive for effective treatment. In severe infections, your doctor may start broad-spectrum antibiotics immediately and narrow down once results are available — a practice called de-escalation.
How to Prepare for the Pus C/S Test
- The pus sample is collected by a healthcare professional — patient preparation is minimal
- Collect before starting or changing antibiotics for the most accurate result
- For deep wounds or abscesses, the doctor may need to aspirate pus with a needle or collect a deep swab — surface swabs from open wounds are less reliable
- Deliver the sample to the lab immediately — delays allow overgrowth of contaminating organisms
- Inform your doctor about any antibiotics you are currently taking
Pus Culture & Sensitivity Test Price in Bangladesh
Pus culture and sensitivity test prices vary between diagnostic centers across Bangladesh. Compare pus C/S test prices on MedTestBD →
Normal ranges cited on this page are based on MedlinePlus and WHO guidance. Prices are collected from public sources and may change — confirm with the facility before visiting. This information is for general reference only and is not medical advice. Always consult a qualified physician.
