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AFB Blood Culture

Item Value
Approval req'd? Approval required if submitted for culture of mycobacteria other than Mycobacterium avium intracellulare complex. Call Microbiology at 353-1268
Available Stat? No
Test code P288
Test group Mycobacteria
Performed by Microbiology
Sendout? No
In House Availability Daily
Method Culture
Collection Instructions Use only dark green top, sodium heparin tubes for blood samples.
Container type Dark green top
(DO NOT use Lithium heparin i.e. Light Green top tubes)
Amount to Collect 5 mL blood
Sample type Heparinized whole blood
Preferred volume 5 mL blood
Min. Volume 1 mL blood
UCSF Rejection Criteria Improper container type
Processing notes Send sodium heparin tubes to China Basin. At China Basin, process upon receipt. Incoculate 3-5 mL into AFB culture bottle. Refer to BD BACTEC FX40 procedure.
Normal range No AFB isolated
Critical value Inpatient results only. After hours outpatient results will be phoned the following morning.
First positive AFB culture; Repeat call only for positive sample from different site or > 2 months since initial call.
Synonyms TB culture; AFB culture; tuberculosis; atypical mycobacteria; MAC; mycobacteriaum avium intercellulare complex; MAI
Stability Room temperature or refrigerated 3 days
Turn around times Up to 60 days
Reflex? If positive additional test(s) will be performed for identification of the mycobacteria and billed separately.
Additional information Blood cultures are performed only for patients with a diagnosis of AIDS and are suitable only for detecting MAIC.
CPT coding 87116-90
LOINC code 50941-4
Last Updated 1/9/2018 6:34 PM
Entry Number 1653
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