Pesticide Multiresidue Analysis - Expanded Screen

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Price of the test:

Expanded Screen$600 per analysis
Pesticide Analyte Confirmation (every 5 analytes)$200 per analysis

Acceptable Matrices:

Baking Mixes, Beans, Cereals, Doughs, Flaxseed, Fruit/Vegetable Juices, Fruits, Grains, Oils (Canola, Coconut, Corn, Cottonseed, Palm, Peanut, Rice Bran, Soybean, Vegetable) Pasta/Semolina, Pastries, Popcorn (no butter), Soups, Sugar (Corn Syrup), Vegetables, Water

Unacceptable Matrices:

Honey, Nutraceuticals, Raw Ingredients with Oil Base, Starches, Cellulose, Supplements, Vitamin Premixes

Limit of Detection:

0.01 ppm - 0.2 ppm (Matrix Dependant)
Exact levels are reported for detected analytes only.  A full list of measured LODs is available as a supplemental report, wtih an additional cost of $100

Sample Size Requirements:

500 grams



Reportable Units:


Turn Around Time:

15 Business Days (matrix dependant)
7 Business Days for Rush (matrix dependent)

Turnaround times are dependent on analytes detected in each sample.  Additional validation work needed to verify detected analytes will extend the turnaround time.

Is Rush Available?


Method Reference:

AOAC 2007.01 with modifications

Method Description:

Pesticides in this screen are extracted using modifications of the QuEChERS (Quick, Easy, Cheap, Effective, Rugged, and Safe) method.  The QuEChERS method, originally developed by the FDA and USDA, is an AOAC Official Method (2007.01).  Modifications were necessary for the extraction of pesticides in dry commodities (J. Agric. Food Chem, 2010, 58, 5959-5972) and high fat commodities (J. Agric. Food Chem, 2010, 58, 5950-5958).  A mixture of acetonitile and water (for dry commodities) or acidified acetonitrile (for high moisture fruits, vegetables and other samples with high water content), is used to extract any pesticide residue from the sample.  The sample and solvent(s) are then treated with an extraction media to isolate the pesticide residues in the acetonitrile.  The extract is cleaned using dispersive solid phase extraction. Cleaned extracts are analyzed by Capillary Gas Chromatography Time of Flight Mass Spectrometry (GC/TOFMS),Ultra Performance Liquid Chromatography Tandem Mass Spectrometry (UPLC/MSMS) and Gas Chromatography Tandem Mass Spectrometery (GC/MSMS).  Identification, confirmation, and quantification are performed using both technologies.  Sample extracts are compared against a matrix matched standard.  Method and Instrument Performance standards are analyzed with each sample to ensure quality results.

Information Required by Submitter:

Please provide fat estimates.

*** Please do not write with a marker or Sharpie on the sample or sample packaging as this may contaminate the sample and affect the results. ***

Additional Information:

Certain analytes may be excluded from a screen due to specific matrix interference; for a complete list, please contact a Medallion Labs representative.

The analytes found in the Expanded Screen are chosen based on customer requests and national and international regulatory requirements.