Biosafety and Specimens
This biosafety level is used for most organisms encountered in the clinical microbiology laboratory.
What is BSL 2?
These organisms appear as Gram-positive cocci in chains.
What is Streptococci?
This medium is used to observe hemolysis.
What is Blood Agar?
This enzyme differentiates Staphylococcus from Streptococcus.
What is catalase?
This Group B Streptococcus test produces an arrowhead of hemolysis.
What is the CAMP test?
This transport medium is commonly used for stool specimens.
What is Cary Blair media?
This organism appears as Gram-negative kidney bean-shaped diplococci.
What is Neisseria gonorrheae (or any Neisseria species)?
This medium supports growth of Haemophilus and Neisseria.
What is Chocolate agar?
This organism is coagulase positive.
What is Staphylococcus aureus?
This Group A Streptococcus test is positive.
What is PYR
This biosafety level is required for Mycobacterium tuberculosis.
What is BSL 3?
This lipid-rich cell wall component allows Mycobacteria to retain stain after acid alcohol treatment.
What are mycolic acids?
This medium is selective for Gram-negative rods and differentiates lactose fermentation.
What is MacConkey Agar?
This organism is novobiocin resistant.
What is Staph saprophyticus?
This organism causes neonatal meningitis and is CAMP positive
What is Streptococcus agalactiae?
A blood culture collected after antibiotic therapy is started may produce this type of result.
What is a false negative culture?
Gram-negative coccobacillus requiring X and V factors.
What is H. influenzae?
This medium is selective for pathogenic Neisseria species.
What is Modified Thayer Martin?
This organism does not ferment mannitol, turns MSA pink, and is a common skin contaminant.
What is Staph epi?
This organism is alpha hemolytic, optochin resistant, and bile insoluble.
What is viridans Streptococci?
This biosafety level requires positive-pressure suits and is used for Ebola virus.
What is BSL 4?
A Gram stain of CSF reveals Gram-positive diplococci. The most likely organism is this.
What is Streptococcus penumoniae?
This medium is used for Legionella pneumophila.
What is BCYE?
A catalase-positive, coagulase-negative organism isolated from a young woman with UTI is most likely this organism.
What is Staph saprophyticus?
This organism grows in 6.5% NaCl and is PYR positive.
What is Enterococcus?