E. coli

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Price of the test:

$20 per analysis

Limit of Detection:

Solids <10 CFU/g
Liquids <1 CFU/g
Limits of Detection can vary based on customer specification

Sample Size Requirements:



Standard Micro Equipment

Reportable Units:


Turn Around Time:

10 Business Days

Is Rush Available?


Method Reference:

AOAC 991.14

Method Description:

Sample is pipetted onto selective media and incubated at 35°C for 48 hours.

Additional Information:

Coliform testing is used as an indicator of general sanitation. They are generally found in soil and water and are prevalent in raw agricultural commodities like flour. A high coliform count can be indicative of sanitation issues.

E. coli is one of many species of coliforms and is an indicator of possible fecal contamination. E. coli counts will never be higher than coliform counts.

Fecal contamination can never be inferred from coliform results alone. If a product has high coliform counts with no E. coli testing and information concerning possible fecal contamination is desired, the sample will need to be retested for E. coli.