Test includes culture, acid-fast smear and concentration of specimen. Recommended screening procedure is 3 first morning specimens of adequate volume submitted on 3 consecutive days. If the acid-fast smear is positive, the Mycobacterium tuberculosis molecular detection PCR, Respiratory, will be performed automatically at an additional charge. Test includes identification of organisms and susceptibility testing of potentially pathogenic organism(s) at an additional charge unless specifically declined. Susceptibilities are performed on the first organism isolated from a patient and at 2-6 month intervals if that organism continues to be isolated while the patient is on therapy. M. tuberculosis susceptibility testing is sent to the Michigan Department of Health & Human Services (MDHHS), M. avium complex susceptibilities are sent to Mayo Medical laboratory and rapidly growing Mycobacteria susceptibilities are performed in the UMHS Microbiology department; although there is no charge for testing, MLabs charges a handling fee for processing and forwarding specimens to MDHHS. A subculture of the isolate is kept for 1 year by the Microbiology Laboratory for further testing, if necessary. By ordering this test the clinician acknowledges that additional reflex testing will be performed and billed at a separate additional charge if indicated.