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Laboratory Test Reference Guide

Laboratory Information

Test Name

TB Specimen (Mycobacterium)

Specimen Collection

Pre Testing Requirements

Notify laboratory if results are required URGENTLY.Ph: 07 8398646 or 07 8398806 ext 98364**For blood or bone marrow TB testing, request special media from Microbiology lab on Ext 98646

Specimen Collection Protocols

Culture of urine is no longer considered necessary when investigating pulmonary TB, as it does not lead to an increase in the number of cases detected, or decrease time to detection.

Patient Specimen

Sample: sputum, bronchial washings, EMU, faeces, tissue, aspirate, CSF, fluid scope QC, blood and bone marrow **

Minimum Volume

Fluid / urine 50 ml, CSF 1ml, sputum 5 ml

Sample Delivery to Lab

Refrigerate if delivery delayed

Test Information

Department

Microbiology

Test Availability

Mon - Fri, 0800 - 1630

Laboratory Testing Time

AFB microscopy 24 hrs (batched daily Monday – Friday) or urgently by request. Culture 2 - 8 weeks All positive microscopy and cultures are notified by phone/ HL7/Fax

Method

AFB microscopy, culture: solid media and broth continuous monitoring system.

Additional Information

TB PCR (NAAT) is available on request, please refer: Mycobacterium tuberculosis complex DNA

It is important never to miss TB but tests should only be requested in patients where TB is a possible diagnosis or in the screening of risk patients.