Slide for Acid Fast Bacilli (AFB) microscopic examination:
– Shipped April 16, 2018
AFB AFB1804-1 AFB1804-2 AFB1804-3
positive 5 (Acceptable) 3 (Acceptable) 5 (Acceptable)
negative 1 (Unacceptable) negative + comment 1 (Ungraded) Total 5 5 5
comment – “Note slide # 2 had few acid fast bacilli?? our lab would report as negative as need >5/slide“
All samples were produced by CMPT. Samples were randomly selected for QC/QA.
Unstained samples were homogeneous and stable for at least to 30 days at 4C.
Sample AFB1804-1 consisted of 3+ (11-50/oif) Mycobacterium chelonae, AFB positive and samples AFB1804-2 & -3 consisted of 2+ (1-10/oif) Mycobacterium chelonae .
All three samples also contained Streptococcus salivarius, AFB negative. Statistical analysis is not applicable.