IDEXX Snap Test

Consumers are increasingly concerned about antibiotic residues in milk. Give them the assurance of the highest product quality by relying on the most thorough rapid test on the market: the SNAP test from idexx.


When to test for antibiotic residue contamination

Keeping antibiotics out of the milk supply is essential to ensure product safety, protect against bacteria resistance, and maintain consumer confidence.

There are three essential residue-testing check points:

Before treated cows return to the milking line.

Testing is essential because antibiotic withhold times can vary, for example:

  • Older cows retain antibiotics longer than younger cows and many times longer than the stated withhold times.
  • If a cow is treated “extra label,” the cow typically retains antibiotic drugs longer than the label withhold time.

After every milking.

  • Testing this frequently saves money, because you can catch mistakes early before dumping good milk on top of bad milk.
  • The earlier you detect residue contamination, the less milk you’ll dump and the lower the financial impact.

Just before pickup.

This is the most critical point of all because it’s the last chance to catch contamination before the milk is shipped.


Unmatched residue detection

The IDEXX Snap tests detect more beta-lactam residues, including cephalexin, than any rapid dairy test. Test can be done on raw milk, UHT milk, sterilized milk, reconstituted milk powder, thawed milk, and skimmed milk. Species include cows, ewes, goats, mares, camels, and buffaloes.


Rugged and versatile

Test raw or comingled milk on the go, without heat. Farmers, truck drivers, and laboratories can read test results visually or by using the SNAPshot* DSR Reader without heating.


Backed by IDEXX

Process milk with confidence knowing that our rigorous quality control standards include ISO 9001 facility certification and independent validation.

Drug European MRL German MRL Detection level (at or below)
Plus Test
SNAP Beta-Lactam ST
Plus Test
Penicillins (Inhibitor group 1)
Penicillin G (Benzylpenicillin) 4 ppb 4 ppb 2 ppb 2 ppb
Ampicillin 4 ppb 4 ppb 4 ppb 4 ppb
Amoxicillin 4 ppb 4 ppb 3 ppb 2 ppb
Oxacillin 30 ppb 30 ppb 3 ppb 3 ppb
Cloxacillin 30 ppb 30 ppb 4 ppb 3 ppb
Dicloxacillin 30 ppb 4 ppb 4 ppb
Nafcillin 30 ppb 3 ppb 4 ppb
Cephalosporins (Inhibitor group 2)
Cephapirin 60 ppb 60 ppb 30 ppb 25 ppb
Desacetylcephapirin 60 ppb <60 ppb 60 ppb
Ceftiofur 100 ppb 100 ppb 8 ppb 9 ppb
Desfuroylceftiofur 100 ppb 25 ppb 30 ppb
Cefquinome 20 ppb 20 ppb 16 ppb 12 ppb
Cefalonium 20 ppb 20 ppb 14 ppb 18 ppb
Cefazolin 50 ppb 50 ppb 20 ppb 18 ppb
Cefacetrile 125 ppb 50 ppb 90 ppb
Cephalexin 100 ppb 100 ppb 30 ppb 40 ppb
Cefoperazone 50 ppb 50 ppb 35 ppb 30 ppb
Tetracyclines (Inhibitor group 6)
Tetracycline 100 ppb 100 ppb 16 ppb N.A.
Oxytetracyline 100 ppb 100 ppb 18 ppb N.A.
Chlortetracycline 100 ppb 100 ppb 40 ppb N.A.
The combination of IDEXX and BENTLEY INSTRUMENTS solutions offers the dairy industry a global solution for the fast and highly accurate milk quality analysis at reception:
Bacteria and somatic cells analysis with our BactoCount IBCm 3.0
Chemical composition (up to 64 components) with our DairySpec FT.


Customer service has always been a priority for Bentley Instruments. We guarantee our customers prompt assistance for optimum productivity.

In order to guarantee the highest level of productivity, our team of technicians takes care of installation, training and diagnostics remotely and locally.

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