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Acid Fast Stain [4503]
MessageFor Specimen Integrity during Extreme Weather see the “Lockbox Usage in Extreme Weather” document at the top of this page.
Test performed as part of Acid Fast Culture (4554)
Test performed as part of Acid Fast Culture (4554)
Test Code
AFBST
Alias/See Also
4503;
Acid Fast Bacilii (AFB) Smear;
AFB Smear;
Mycobacterium Smear;
Acid Fast Bacilii (AFB) Smear;
AFB Smear;
Mycobacterium Smear;
CPT Codes
87206
Preferred Specimen
Acid Fast Stain (any source). Specimen submitted in sterile, leakproof container.
Instructions
Sputum: First morning deep cough specimen. Submit on 3 consecutive days (not pooled).
Urine: First morning voided specimen. Do not use preservative-containing transport system. Submit specimens on 3 consecutive days (not pooled).
Other specimens: submit in tightly sealed screw-capped containers. Specify source on requisition.
Analysis to be performed:
1. Fluorochrome staining for acid fast bacilli.
2. Confirmatory Ziehl-Neelson acid fast stain will be performed when necessary.
Urine: First morning voided specimen. Do not use preservative-containing transport system. Submit specimens on 3 consecutive days (not pooled).
Other specimens: submit in tightly sealed screw-capped containers. Specify source on requisition.
Analysis to be performed:
1. Fluorochrome staining for acid fast bacilli.
2. Confirmatory Ziehl-Neelson acid fast stain will be performed when necessary.
Transport Container
Sterile Container
Transport Temperature
Room Temperature
Specimen Stability
Room Temperature = 5 days
Refrigerated = 5 days
Frozen = unacceptable
Refrigerated = 5 days
Frozen = unacceptable
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Frozen specimen
Methodology
Fluorochrome Stain (AURAMINE/RHODAMINE)
Setup Schedule
All
MYC
MYC
Report Available
1 day
Clinical Significance
The smear result should be used as an adjunct in evaluating a patient's tuberculosis status, and cultural examination is highly recommended for laboratory diagnosis. Positive smears indicate the presence of acid fast organisms and possible communicability.
Performing Laboratory
Compunet Clinical Laboratories, LLC
2308 Sandridge Drive
Moraine, OH 45439
Last Updated: December 7, 2021