Quick Reference
- Full form
- Blood for AFB Culture & Sensitivity
- Sample type
- Blood
- Fasting
- Not required
- Sample collection
- Collected at our lab for proper handling
- Marker measured
- 1
- Report turnaround
- Next day
- Available at
- All locations
About Blood for AFB Culture & Sensitivity
This test cultures your blood sample to check for tuberculosis bacteria and, if found, tests which antibiotics work best against it. It is typically ordered when TB is suspected but a rapid smear test has not given a clear answer.
No fasting is required, and because culture growth takes time, results are available the next day for an initial read, though full sensitivity results can take longer for slow-growing bacteria.
How to Prepare
- No fasting required.
- This sample needs careful collection at our lab to avoid contamination.
Frequently Asked Questions
Why would a doctor order a blood AFB culture?
It is ordered when TB is suspected but a rapid smear test has not given a clear or complete answer.
Do I need to fast before this test?
No fasting is required.
What does culture and sensitivity testing tell my doctor?
It confirms the presence of TB bacteria and identifies which antibiotics will work best for treatment.
Why does this test take longer than a smear?
Culturing bacteria requires time for growth, which can take longer than a same-day microscopic smear.
How soon will my initial report be ready?
Next day for an initial read, with full culture results following as growth develops.
Is home sample collection available?
Yes, in all City Care Lab service areas.
This page provides general health information and is not a substitute for medical advice. Speak with your doctor about your specific results and treatment.