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Test Code AFS Acid-Fast Bacilli (AFB) Smear, Direct

Important Note

Strongly suggest ordering a CTB and SAFB (Mayo tests). Sputum, bronchial washings or bronchial lavage are the only acceptable sources for the in-house Direct Acid Fast Smear. All non-respiratory specimen types and samples will be sent to the reference lab where they are processed for Mycobacteriology Culture (CTB) and concentrated Acid Fast Smear (SAFB).

Performing Laboratory

MaineGeneral Medical Center

Specimen Requirements

Sputum, bronchial washings or bronchial lavage are the only acceptable sources for this test.

 

Minimum volume:

4 mL

Day(s) Test Performed

Monday - Sunday

Test Classification and CPT Coding

87206

Methodology

Note:  This test is performed at MaineGeneral Medical Center only if the patient has been placed in a tuberculosis (TB) isolation room due to high risk and/or symptoms of TB.

 

 

Reference Values

No acid-fast bacilli seen  (Direct Smear)