Specimen Gram Stains


WHEN YOU KNOW GRAM STAIN RESULTS THINK

Meningitis (CSF)

Pleomorphic Gram negative bacilli

Haemophilus influenzae

Gram negative diplococci

Neisseria meningitidis

Gram positive cocci in pairs

Streptococcus pneumoniae

Wound infection

Gram positive cocci in clusters

Staphylococcus aureus

Gram positive cocci in pairs

Streptococci

Gram positive bacilli

Bacillus, Clostridium

Gram negative bacilli

E coli, enterics, others

Bacteremia

Gram positive cocci in clusters

Staphylococcus aureus

Gram positive cocci in chains

Streptococci

Gram positive cocci in pairs

Streptococcus pneumoniae

Gram positive bacilli

Bacillus, Corynebacterium, Clostridium

Gram negative bacilli

E coli, enterics, others

Yeast

Candida albicans, Cryptococcus neoformans

Urinary tract infection

Gram positive cocci in clusters

Staphylococcus aureus

Gram positive cocci in chains

Streptococci

Gram positive cocci in pairs

Enterococci

Gram negative bacilli

E coli, enterics, others

Yeast

Candida albicans

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