Days Set Up
Monday - Saturday. Neutralization procedure available daily.
Analytic Time

Preliminary results are reported in 12-24 hours. The health care provider will be notified of positive cultures. Negative cultures are reported after 6 weeks.

Soft Order Code

Test Updated:


Gastric Culture, AFB
Culture, Gastric, AFB
Mycobacteria Culture, Gastric
TB Culture, Gastric
AFB Smear and Culture
Acid Fast Bacilli Culture, Gastric Fluid

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Find a Requisition

All specimens should be accompanied by a requisition.

Submitting Specimens

Learn about how to properly label and where to ship specimens.

Order Kits and Supplies

MLabs provides all the supplies necessary for the collection of specimens.

Test FAQ

Visit our provider FAQ and learn about common questions to ordering tests.

Test Overview

Test Methodology

BD MGIT, Culture

Test Usage

Isolate and identify mycobacteria

Reference Range

No growth of mycobacteria

* Reference ranges may change over time. Please refer to the original patient report when evaluating results.

Specimen Requirements

Collection Onsite

Please contact the laboratory at 936-6877 for smear only or culture only requests. Follow procedure for gastric aspiration. MUST be collected on waking, from a fasting patient. Do not store. Send directly to the Microbiology Laboratory; must be received within 4 hours for neutralization. Rejection criteria: not received within 4 hours of collection, not first morning collection.

Collection Offsite

Perform gastric aspiration. The specimen must be collected on waking, from a fasting patient. Send the specimen within 4 hours of collection or neutralize the specimen to pH 6.5 - 7.5 within 4 hours of collection. Refrigerate and send neutralized specimen within 24 hours; indicate on the requisition that the specimen has been neutralized. Indicate specimen source, collection date/time, current antibiotic therapy and clinical diagnosis. If unacceptable specimen is received, the client will be called and another specimen will be requested before disposal of the original specimen.

Normal Volume
5 - 10 mL fluid
Minimum Volume
5 - 10 mL fluid

Billing Information

CPT Code
87116 Culture, 87206 Smear
Pro Fee Code

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Our High Standard

Quality that sets us apart

As the reference laboratory division of Michigan Medicine's Department of Pathology, MLabs shares the institution's commitment to applying established quality principles to clinical laboratory testing. Like other large organizations in complex, consequential fields, we rely on an established approach to monitor quality throughout the testing process.