Quick answer
The Sputum Culture & Sensitivity Test costs ₹1,200 at Live Line Health Care. Grows bacteria from coughed-up phlegm to identify the cause of a chest infection and show which antibiotics are likely to work against it. No fasting is needed. It uses a sputum sample and the report is usually ready within 48–72 hours.
Also known as: Sputum C/S, Sputum for C/S, Sputum CS, Sputum Culture and Sensitivity, Sputum Bacterial Culture, Phlegm Culture
What is the Sputum Culture Test?
A Sputum Culture & Sensitivity test looks for the bacteria behind a chest infection. Your phlegm is placed on nutrient plates and kept warm in an incubator for a day or two, so that any bacteria present can multiply into visible colonies. If a likely disease-causing germ grows, it is identified and tested against a range of antibiotics. The result tells your doctor which medicines are likely to work, which matters more than ever as antibiotic resistance rises.
The quality of the sample decides the quality of the report. Phlegm passes through the mouth, which naturally holds many harmless bacteria, so a watery, saliva-heavy sample can grow only mouth germs and mislead. Deep-cough morning sputum, given before antibiotics, offers the best chance of a useful answer. This routine culture is designed for common chest bacteria and does not test for TB, which grows very slowly and needs its own tests, such as Sputum AFB and TB PCR. Viruses, including those behind most colds and flu, will not grow here either.
What it measures: Bacteria growing from a sputum sample, their identity, and whether antibiotics can stop them.
Parameters included (3)
- Bacterial Growth
- Organism Identified
- Antibiotic Sensitivity Report
Why is this test done?
- Pneumonia or a chest infection that is not improving
- Flare-ups of COPD or bronchiectasis, with more or thicker phlegm
- Repeated chest infections
- A chest infection in someone with low immunity or after a hospital stay
- Choosing a medicine when earlier antibiotics have not worked
When should you get tested?
- Cough with thick yellow, green or rust-coloured phlegm
- Fever with chills
- Chest pain that worsens with coughing or deep breaths
- Breathlessness or wheezing
- A cough that stays after a course of antibiotics
How to prepare for the Sputum Culture Test
- 1Do not take antibiotics before giving the sample unless your doctor has told you to. If you have started them, tell the staff.
- 2Morning is the best time. After waking, rinse with plain water and avoid mouthwash, since it can affect bacteria.
- 3Cough from deep in the chest into the sterile container, without touching the inside of it.
- 4Hand over the sample quickly, because mouth bacteria can overgrow if it is left standing.
Sputum Culture Test normal range
| Parameter | Typical reference range |
|---|---|
| Expected result | No disease-causing bacteria grown, or normal upper respiratory flora only |
| Growth of a likely cause | Germ named, for example Streptococcus pneumoniae, Klebsiella pneumoniae or Pseudomonas aeruginosa |
| Sensitivity report | Each antibiotic marked S (sensitive), I (intermediate) or R (resistant) |
Culture reports describe what grew, so there is no numeric normal range. Some reports also comment on sample quality. Ranges are typical adult values and vary between labs, age and sex. Always use the range printed on your report and discuss results with your doctor.
Understanding your results
- Normal flora means only the usual mouth and throat germs grew. Your symptoms may be viral, or antibiotics may have been taken before the sample.
- S means the germ is likely to respond to that antibiotic and R means it probably will not. Your doctor should choose the medicine based on this report, considering allergies and your overall health.
- Growth does not always mean infection. In long-term lung disease, bacteria or yeast can live in the airways without causing illness.
- No growth does not rule out a chest infection, or TB, which this test cannot find.
- Severe breathlessness, blue lips, confusion or chest pain need emergency care, not a culture report.
Sputum Culture Test – FAQs
What is the price of the Sputum Culture Test?
The Sputum Culture & Sensitivity Test costs ₹1,200 at Live Line Health Care, at all 45 centres and for home sample collection.
How is a sputum culture different from a sputum AFB test?
A sputum culture grows common chest bacteria over a few days and shows which antibiotics work against them. Sputum AFB is a microscope check looking for TB-type bacteria. A routine culture cannot detect TB, so doctors order each for a different suspicion.
What does normal flora mean on a sputum culture report?
It means the plates grew only the harmless bacteria that normally live in your mouth and throat, and no clear disease-causing germ. It may mean your illness is viral, or that the sample contained more saliva than phlegm.
Can I take antibiotics before a sputum culture?
Please avoid them unless your doctor has told you otherwise, because even one or two doses can stop bacteria growing and give a falsely reassuring report. If you are already on antibiotics, do not stop them on your own. Just tell the staff and your doctor.
What do S, I and R mean on a culture report?
They describe how the germ reacted to each antibiotic in the lab. S means sensitive, I means intermediate and R means resistant. Please do not pick a medicine from the list yourself. Your doctor will weigh it with your infection and health history.
How do I collect a good sputum sample?
Wake up, rinse with water, then take two or three deep breaths and cough hard from your chest. Spit the phlegm straight into the sterile container and close it. Thick, coloured phlegm is useful, while clear watery spit usually is not.
Why does a sputum culture take 2 to 3 days?
Bacteria need time to grow into colonies that can be identified. Further time is then needed to test them against antibiotics. A report issued too quickly would miss slower germs, so this waiting period cannot really be shortened.
Where can I get the Sputum Culture Test done?
At any of our 45 Live Line Health Care centres in 40 cities across Andhra Pradesh and Telangana, including Hyderabad, Visakhapatnam, Warangal, Kakinada and Nellore, or book home sample collection.
Medical disclaimer: This information is for general awareness only and is not a substitute for professional medical advice. Please consult a qualified doctor to interpret your results and before starting or changing any treatment.