QC organisms Flashcards by Karolina S | Brainscape

Q

staphytect

A

pos (agglute): SAU

neg (no agglut): SEP

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Q

gram stain

A

pos: staphylococcus (purple GPC)

neg: e coli (pink GNB)

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Q

catalase

A

pos: staphylococcus (bubbles)

neg: streptococcus (no bubble)

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Q

coagulase

A

pos: SAU (staph. aureus) ( any clot)

Neg: SEP (staph epidermidis) (no clot)

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Q

novobiocin

A

SUS (>/22mm); SAU or SEP

RES (</15mm); SAP (saprophyticus)

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Q

bile solubility

A

pos: S. pneumoniae (bile soluble)

neg: EFA (bile insoluble)

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Q

PYR

A

pos (purple): EFA/Strep pyogenes

neg (no colour): ECO

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Q

lancefield

A

all STREP
A - s. pyogenes
B- s. agalactiae
C/G - S. dysgalactiae
D - EFA

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Q

optochin

A

SENS (>/14mm): S. pneumoniae

RES (<14mm): EFA or Viridans

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Q

oxidase

A

pos: PAU

neg: ECO

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