BIOCHEMICAL TEST

Bacitracin Susceptibility Test

Used to determine the susceptibility of bacteria particularly gram-positive organisms to the antibiotic bacitracin.

Bacitracin Susceptibility Test

Differentiate between Streptococcus pyogenes (Group A streptococci) and other beta-hemolytic streptococci;

Bile Esculin Test

used to identify bacteria that can hydrolyze esculin in the presence of bile salts.

Bile Esculin Test

The test is primarily used to differentiate Enterococcus and Group D Streptococci (which are bile-esculin positive) from non-Group D Streptococci.

The Catalase Test

is used to detect the presence of the enzyme catalase in bacteria.

Catalase Test

Distinguish between genera such as Staphylococcus and Streptococcus

The Coagulase Test

is used to detect the production of the enzyme coagulase by bacteria, which converts fibrinogen to fibrin, causing clot formation.

Coagulase Test

It is primarily used to differentiate Staphylococcus aureus (coagulase-positive) from other coagulase-negative staphylococci.

IMViC Test

Differentiating Escherichia coli from Enterobacter and Klebsiella species.

Indole Test

Detects the ability of the organism to convert tryptophan into indole.

Methyl Red Test (MR)

Measures the production of stable acids from glucose fermentation.

Voges-Proskauer Test (VP)

Detects the production of acetoin, a neutral fermentation product from glucose.

Citrate Utilization Test

Determines if the organism can use citrate as its sole carbon source.

Motility Test

is used to determine whether a microorganism is capable o independent movement through the use of flagella

Optochin Susceptibility Test

is used to differentiate Streptococcus pneumoniae from other alpha-hemolytic streptococci, particularly Streptococcus viridans.

Optochin Susceptibility Test

is an antibiotic that interferes with the APase and production of adenosine triphosphate (ATP) in microorganisms.

Triple Sugar Iron (TSI) Test

is a differential test designed to identify and differentiate among Gram-negative enteric bacteria based on their carbohydrate fermentation capabilities and hydrogen sulfide (HS) production.

TSI

The test is used primarily to differentiate members of the Enterobacteriaceae family from other gram-negative rods.