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Fluid Edge Themes   |   1 (805) 922-0055   |   Laboratory Service: 24 / 7

Microbiological Analysis

Precise, Responsive, and Affordable

Increased awareness of food safety from farm to fork has led to a food safety revolution.

We at PrimusLabs offer complete testing capabilities for the detection of pathogens and indicator organisms which may be responsible for food safety and quality issues. Due to the illnesses and deaths caused by pathogenic food borne bacteria, microbiological testing has become a higher priority among food industry professionals. PrimusLabs utilizes current FDA, USDA, AOAC and NOM approved methodologies for its microbiological analysis. Equipment such as the PCR and other techniques are employed with being open 365 days a year and around the clock service to provide the fastest turn-around time for results. PrimusLabs employs well-trained, highly qualified, and dedicated professionals to assure the client obtains accurate and timely analytical results.

List of Analyses & Methods


CMMEF 24.44 4th ed.  |  Direct Plating

Aerobic Plate Count

AOAC 990.12  |  Petrifilm

E. coli

AOAC 991.15  |  Potability

SM 9223  |  Colilert

FDA-BAM 8th ed.  |  MPN 9 tube

SM 9221  |  MPN 15 tube

AOAC 991.14  |  Petrifilm

AOAC-RI 051801  |  Rapid Petrifilm

E. coli 0157:H7

AOAC-RI 031002  |   BAX

FDA-BAM 8th ed.  |  Cultural


AOAC 2003.01  |  Petrifilm

Fecal Coliform

FDA-BAM 8th ed.  |  MPN 9 tube

SM 9221  |  MPN 15 tube

Listeria sp.

AOAC-RI 081401  |  BAX

USDA / FDA-BAM  |  Cultural

Listeria monocytogenes

AOAC-RI 121402  |  BAX

USDA / FDA-BAM  |  Cultural

Salmonella sp.

AOAC 2013.02  |  BAX

FDA-BAM 8th ed.  |  Cultural

Shigella sp.

CMMEF 38.23, 24, 24 4th ed.  |  Cultural

STEC (Shiga-toxigenic E. coli)

AOAC-RI 091301  |  BAX

STEC / E. coli O157:H7

AOAC-RI 091301  |  BAX

Staphylococcus aureus

AOAC 2003.07  |  Petrifilm

Total Plate Count

AOAC 990.12  |  Petrifilm

AOAC-RI 121403  |  Rapid Petrifilm

Water  |  SM 9215B  |  Direct Plating

Total Coliform

AOAC 991.14  |  Petrifilm

Potability  |  AOAC 991.15  |  Colilert

SM 9223  |  Colilert

FDA-BAM 8th ed.  |  MPN 9 tube

SM 9221  |  MPN 15 tube

Yeast and Mold

FDA-BAM 8th ed.  |  Direct Plating

AOAC 2014.05  |  Rapid Petrifilm

Other Analyses

Contact us for additional analyses.

Schedule a sampling request, request for analysis, or both online in a matter of minutes. Click ‘Begin a Request’ to explore all of your options for getting started.

Transparency, Traceability, & Accuracy

Over 30 years of service to the food safety industry, attention to detail, customer care, and quality of service.

PrimusLabs provides complete access to our methods and procedures, ensuring that you have the information you need and a partner that you trust.

Our laboratory systems are designed for full traceability, maintaining sample identity via an unbroken chain of documentation.

PrimusLabs’ commitment to accuracy is driven by the latest technology and over 30 years of experience in the fresh produce industry, providing your team peace of mind and the knowledge that your sample results reflect a true picture.

Data Management Integration & Custom Reporting

Powered by Azzule Systems, PrimusLabs data integration tools provide our clients with instant access to their results, sample and analysis tracking, and automatic transfers to your buyers. Azzule System’s unmatched data analytics can provide clients with customizable reports that identify potential food safety issues before they become problems.

Data Management services are offered at no cost to our clients. Powered by Azzule Systems.

Types of Microbiological Services

Occasionally FDA will stop shippers and importers at the border from shipping products based on a positive test for a pathogen.


When this happens, FDA requires import detention testing of several loads (typically five from an independent laboratory to be removed from this detention and commence shipping into the United States).


PrimusLabs is an approved FDA sampling and testing lab for these samples. Contact us today for a quote!


How to schedule sampling for a FDA sample

PrimusLabs offers a wide range of microbiological services including Total Plate Count, Total Coliform, FC, E. Coli, Listeria, Salmonella, E. Coli-157:H7, and Yeast & Mold analysis for determination of environmental cleanliness.


PrimusLabs has trained samplers to meet all sampling needs: swabbing of facility equipment, environmental swabbing, pulling water and product samples. PrimusLabs can also set-up line flow and sampling rotations for our customers when a scheduled testing has been established.

PrimusLabs offers certified water testing for Total Coliform and E.coli to determine water quality –this includes drinking water. PrimusLabs also provides water sampling by trained samplers who can be dispatched to pull samples according to your needs. All samplers have been trained to follow LGMA guidelines for sampling, if needed.

PrimusLabs offers a comprehensive array of final product tests that include Total Plate Count, Total Coliform, Fecal Coliform, E. Coli, Yeast and Mold and others for product quality.


Additionally, analysis for specific pathogens such as Salmonella, E. coli O157:H7, Staphylococcus, Enterohemmoragic E. coli, Shigella, and many others can be performed to ensure your produce safety. PrimusLabs will send out trained samplers to pick-up or pull your product samples according to your needs. Ask our dispatch group about the details.

Internationally Accredited Laboratories

United States, Mexico, South & Central America

Client Sampling Guidelines

PrimusLabs is pleased to offer general information on sample collection, shipment and handling of samples and more. These tools are an excellent starting point for developing your food safety analysis and sampling protocols.