Mycobacteria Stain, Acid‑Fast, Fluorochrome
Use
This test (test code 4503) refers to a fluorochrome acid‑fast stain used for the microscopic detection of Mycobacteria (acid‑fast bacilli, AFB) in clinical specimens. It is primarily used as a rapid screening tool to detect possible mycobacterial infection. A negative stain does not exclude infection; culture is recommended for definitive diagnosis. Highlighted for its utility in early detection and treatment monitoring.
Special Instructions
Orderable test code 4503, Mycobacteria Stain, Acid‑Fast, Fluorochrome, is performed at Quest Diagnostics Infectious Disease, Inc., succeeding previous performance at Quest Diagnostics Nichols Institute in Valencia. The stain is typically ordered alone or paired with culture (see test code 4554 for culture with smear).
Limitations
Microscopic acid‑fast staining is less sensitive than culture and cannot definitively rule out infection when absent. Positive smears are not species‑specific. AFB presence should be interpreted alongside culture and clinical findings.
Methodology
Other
Biomarkers
Result Turnaround Time
1-2 days
Related Documents
For more information, please review the documents below
Specimen
Body Fluid
Volume
Not provided
Minimum Volume
Not provided
Container
Sterile, leak‑proof container
Collection Instructions
Body fluids or lower respiratory tract specimens
Storage Instructions
Refrigerated transport