Coliform Counts- Dairy products- Milk and Dairy 

Laboratory Fee Schedule
Procedure:  MDG0381A


Synonym(s): Coliforms, PCC, HSCC
Requisition Form G-84; G-21; G-21 RR
Test Description Enumeration of Coliform Bacteria using the 3M® Petrifilm™ method.    
Pre-Approval Needed Regulatory
Supplemental Information Required N/A
Supplemental Form(s) N/A  
Performed on Specimens from (sources) Food
Sample/Specimen Type for Testing

Dairy Products

Minimum Volume/Size Required

100 mL/ 100 grams

Storage/Preservation Prior to Shipping

•   Place milk sample in sterile zip-lock or whirlpack bag or other sterile plastic container.

•   Store on ice.  Must be kept between 0.0°C and 4.5°C.

•   Must be tested within 60 hours of collection.

Transport Medium N/A
Specimen Labeling Sample Identification must match submission form.
Shipping and Specimen Handling Requirements

•   Ship samples on Ice and/or Ice Packs.

•   Samples must be shipped for overnight delivery.

•   Ship according to Dangerous Good Regulations, IATA, and/or CFR 49.

Method FORM FDA/NCIMS 2400a-4: Petrifilm™ Aerobic and Coliform Methods
Turn-around Time 4 Days

The sample must be tested within 60 hours of collection. 

Common Causes for Rejection •   Not collected by a Registered Sanitarian
•   Insufficient quantity
•   Improperly stored
•   Failure to meet shipping guidelines
Additional Information N/A