Mycobacterium – detection – Blood

Detection of acid fast bacilli from blood
Microbiology
Bacteriology
○ Whole blood

Other Information

○ Blood collected in EDTA tubes, coagulated blood, blood in blood culture medium, serum, plasma are unacceptable specimens

○ SPS in blood culture bottles may delay the growth of some Mycobacteria

○ Indicated when there is a suspicion of disseminated infection ( in immunocompromised patients) or a suspicion of M. chimera infection following open-chest heart surgery

○ Sodium polyanethol sulfonate (SPS) tube (yellow top tube) (8 mL)
○ Heparin tube (green top tube) (10 mL)


Whole blood:
○ Decontaminate skin with 70% alcohol followed by iodine or chlorhexidine, collect at least 6 mL of blood


Refer to section Sample Processing / Delivery

PHOL

○ Culture: Up to 42 days; a positive culture is reported within 24 of growth

416-586-4800 extension 4564

NO

○ Label specimen container. Place specimens in biohazard bag and seal.

○ Transport specimens to the UHN/SH Microbiology Laboratory ASAP at room temperature (20-25˚C)

○ UHN/SH Microbiology Laboratory will refer specimen to Public Health
Ontario Laboratory for testing