STAIN AFB MYCOBACTERIUM (AF7)
: AF7, Acid Fast Bacilli, AFB smear
: AFB smear
: Flurochrome stain; positives confirmed with Kinyoun's stain
: Negative for acid fast bacilli
: Sterile container
: Specify source
: Room temperature
: Send to lab immediately
Reasons for Rejection
: Contamination of specimen, specimen not received in appropriate sterile container, excessive delay in transport.
: Respiratory specimens are performed daily; all others are performed Monday - Friday.
: Once per day
: 1 - 3 days (respiratory specimens have a preliminary report in 24 hours)
: Acid fast stain, as a stand alone test, has a poor negative predictive value.
: AFB stain is included with most AFB cultures; see culture for specific site.
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