This test looks for acid-fast bacilli (AFB) in your body fluids, most commonly sputum. AFB are a type of bacteria that cause tuberculosis (TB) and some other infections. Finding these bacteria helps your doctor diagnose if you have an active infection. It can also help guide treatment decisions.
You may be asked to provide a sputum sample. Your doctor or a lab technician will give you instructions on how to collect it.
More about this test
This test looks for acid-fast bacilli (AFB) in your body fluids, most commonly sputum. AFB are a type of bacteria that cause tuberculosis (TB) and some other infections. Finding these bacteria helps your doctor diagnose if you have an active infection. It can also help guide treatment decisions.
Typical price in India
₹240
Based on 3 centres listing this test. Prices vary by city, lab, and accreditation.
Medically reviewed by: Locatemycentre editorial team. Informational only; not medical advice. Always consult a licensed physician for diagnosis or treatment.
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This test looks for acid-fast bacilli (AFB) in your body fluids, most commonly sputum. AFB are a type of bacteria that cause tuberculosis (TB) and some other infections. Finding these bacteria helps your doctor diagnose if you have an active infection. It can also help guide treatment decisions.
How should I prepare for a AFB smear?
You may be asked to provide a sputum sample. Your doctor or a lab technician will give you instructions on how to collect it.
How much does a AFB smear cost in India?
AFB smear typically costs around ₹240 at most Indian diagnostic centres, though prices vary by city, lab, and accreditation. WhatsApp two or three centres on Locatemycentre with the test name and pick the lowest NABL-accredited quote.
Can I get a AFB smear with home sample collection?
Yes. Almost every NABL-accredited diagnostic centre in metros like Bangalore, Delhi, Mumbai, Chennai and Hyderabad offers home sample collection for AFB smear. Book the night before, especially for any fasting tests, and confirm the visit fee (typically ₹100-₹250).
How long do AFB smear results take?
Most routine AFB smear reports are ready within 6-24 hours of sample collection. Specialised assays and tests sent to a parent lab may take 2-7 days. Confirm the exact turnaround with the centre before booking - it matters if you have a follow-up consult scheduled.
How will I receive the report?
Reports are emailed as a PDF and are usually downloadable from the centre's patient portal using your registration ID. Hard-copy collection at the counter is usually free; courier delivery is optional. Save the digital copy - your physician will want to see it alongside any prior reports.
Do I need a doctor's prescription for a AFB smear?
For most routine versions of AFB smear you can walk in without a prescription. Some advanced or restricted tests require a referral by law, and a physician's involvement is always recommended so the result is interpreted against your symptoms and history.
When should I repeat a AFB smear?
Repeat timing depends on the clinical reason for the test. For monitoring a known condition, your physician will set the interval (often every 3-6 months). For a screening test that came back normal, repeat as part of your annual health check unless your doctor advises otherwise.