Quick Reference
- Full form
- Sputum for ZN Stain
- Sample type
- Sputum
- Fasting
- Not required
- Marker measured
- 1
- Report turnaround
- Same day
- Available at
- All locations
About Sputum for ZN Stain
This test uses the Ziehl-Neelsen staining method specifically to make TB bacteria visible under the microscope in your sputum sample, given their naturally waxy, stain-resistant coating.
No fasting is required, and results are available the same day.
How to Prepare
- No fasting required.
- A morning sample, ideally after a deep cough, gives the best results.
Frequently Asked Questions
What is ZN staining used for?
It is a specialised staining method that makes TB bacteria visible under the microscope in sputum samples.
Do I need to fast before this test?
No fasting is required.
Is this the same as the standard AFB smear?
It uses the same core staining principle, and both terms are often used interchangeably for this type of testing.
When would my doctor order this test?
For persistent cough or other symptoms suggestive of tuberculosis.
How soon will my report be ready?
Same day.
Is home sample pickup available?
Yes, our team can guide you on collection 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.