|Downtime form:||A-1a Doctor-Provider Orders - Pathology Microbiology|
356-2591 Bacteriology/Virology Section
B. Sputum - an early morning specimen on three consecutive days is preferred although two specimens collected on same day >8 hours apart with third specimen on next day is acceptable for the diagnosis of pulmonary tuberculosis. Collect 5-15 mL in a sterile container. Pooled specimens are unacceptable.
C. Swabs are suboptimal for the recovery of mycobacteria since they provide limited material and the hydrophobicity of the mycobacterial cell envelope often compromises a transfer from swabs onto media. See bacterial culture for collection and transport of all other specimen types.