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Fecal Egg Count Testing

Modified McMaster FEC — Results in Eggs Per Gram (EPG)

A fecal egg count measures the parasite egg load in a fresh manure sample, giving you and your veterinarian a clear, objective basis for deworming decisions — treating only the animals that need it and slowing parasite resistance.

Horse owner gently petting her chestnut horse in a stable

Targeted deworming protects your animals, your budget, and the long-term effectiveness of the treatments you rely on.

Fresh Manure Sample

About the size of a large chicken egg per animal.

Modified McMaster

Proven counting method for reliable, repeatable results.

Eggs Per Gram

Reported as EPG with a clear low, moderate, or high shedding level.

Fast Turnaround

Results reported promptly so you can act while they matter.

/ Process

How FEC Testing Works

From sample collection to final report, our process makes fecal egg count testing clear, convenient, and easy to use.

Fecal Egg Count Test

  • Sample — Fresh manure
  • Amount — About the size of a large chicken egg
  • Method — Modified McMaster technique
  • Report — Eggs per gram (EPG)

Handling

  • Keep the sample cool with a cold pack
  • Do not freeze
  1. / 01

    Choose your test

    Select sample submission only or an FEC kit with the shipping option that works best for you.

  2. / 02

    Collect a fresh sample

    Label the collection bag and collect a fresh manure sample soon after the animal passes it. Securely seal the bag and cool the sample — do not freeze it.

  3. / 03

    Submit your samples

    Include the sealed sample, completed FEC submission form, and a frozen cold pack. Package everything in the appropriate return mailer and send it to Precision Diagnostics.

  4. / 04

    Receive your results

    Your report provides the fecal egg count in eggs per gram, giving you and your veterinarian useful information for making informed deworming decisions.

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Get fast, reliable testing and the answers you need to move forward with confidence.