Dairy test protocols

IDEXX tests are quick and easy. Watch the video, or select a test below, and then review the steps, temperatures and timing.

 

Availability/Distribution: Outside the U.S. and Canada

Before you begin

  • Work space must be clean and free of drug residues.
  • Make sure conjugate pellet is at the bottom of the sample tube. If it is not, tap tube gently to return pellet to the bottom.
  • Agitate the milk sample thoroughly.

 

Notes

  • Accurate timing is essential.
  • Do not use a SNAP test after its expiration date.
  • Refer to package insert for complete instructions.
     

SNAP Beta-Lactam ST Test insert

Step 1. Prepare sample


Using pipette, draw up milk to indicator line (450 μL ±50 μL).
Add milk to sample tube. 

Gently shake tube side-to-side
3–4 times to dissolve reagent pellet.

Step 2. Run test


Within 15 seconds of mixing sample, pour entire contents of sample tube into sample well of SNAP device.

As the edge of the activation circle begins to disappear, press down firmly until you hear a distinct “snap.” If activation takes more than 60 seconds, result may be inaccurate.*

Time for 6 minutes.

Step 3. Read results


Read results either visually or using the SNAPshot DSR Reader.

Negative
Sample spot (2) is darker than or equal to control spot (1). No drug residue detected.

Positive
Sample spot (2) is lighter than control spot (1). Drug residue detected.

* A slow flow rate may be caused by a thick sample or by using less than 450 μL of sample.

Availability/Distribution: Outside the U.S. and Canada

Before you begin

  • Work space must be clean and free of drug residues.
  • Make sure conjugate pellet is at the bottom of the sample tube. If it is not, tap tube gently to return pellet to the bottom.
  • Agitate the milk sample thoroughly.

 

Notes

  • Accurate timing is essential.
  • Do not use a SNAP test after its expiration date.
  • Refer to package insert for complete instructions.
     

SNAP Beta-Lactam ST PLUS Test

Step 1. Prepare sample


Using pipette, draw up milk to indicator line (450 μL ±50 μL).
Add milk to sample tube. 

Gently shake tube side-to-side
3–4 times to dissolve reagent pellet.

Step 2. Run test


Within 15 seconds of mixing sample, pour entire contents of sample tube into sample well of SNAP device.

As the edge of the activation circle begins to disappear, press down firmly until you hear a distinct “snap.”

Time for 6 minutes.

Step 3. Read results


Read results either visually or using the SNAPshot DSR Reader.

If the sample spot is lighter than the control spot, the sample is positive. If the sample spot is equal to or darker than the control spot, the sample is negative.

Availability/Distribution: Europe

Before you begin

  • Work space must be clean and free of drug residues.
  • Preheat heater block to 45°C ±5°C (113°F ±9°F).
  • Place SNAP device on heater block; leave on heater block for duration of test.
  • Make sure conjugate pellet is at the bottom of the sample tube. If it is not, tap tube gently to return pellet to the bottom.
  • Agitate the milk sample thoroughly.

 

Notes

  • Accurate incubation times and temperatures are essential.
  • Do not use a SNAP test after its expiration date.
  • Refer to package insert for complete instructions.
     

SNAP MRL Test insert

Step 1. Prepare sample


Using pipette, draw up milk to indicator line (450 μL ±50 μL).
Add milk to sample tube. 

Gently shake tube side-to-side
3–4 times to dissolve reagent pellet.

Place tube on heater block and incubate for 5 minutes.

Step 2. Run test


Pour entire contents of sample tube into sample well of SNAP device.

As the edge of the activation circle begins to disappear, press down firmly until you hear a distinct “snap.” If activation takes more than 60 seconds, result may be inaccurate.†

Incubate device for 4 minutes.

Step 3. Read results


Read results either visually or using the SNAPshot DSR Reader.

Negative
Sample spot (2) is darker than or equal to control spot (1). No drug residue detected.

Positive
Sample spot (2) is lighter than control spot (1). Drug residue detected.

* NCIMS-certified laboratories must use a calibrated pipette.
† A slow flow rate may be caused by a thick sample or by using less than 450 μL of sample.

Availability/Distribution: U.S. and Canada

Before you begin

  • Work space must be clean and free of drug residues.
  • Preheat heater block to 45°C ±5°C (113°F ±9°F).
  • Place SNAP device on heater block; leave on heater block for duration of test.
  • Make sure conjugate pellet is at the bottom of the sample tube. If it is not, tap tube gently to return pellet to the bottom.
  • Agitate the milk sample thoroughly.

 

Notes

  • Accurate incubation times and temperatures are essential.
  • Do not use a SNAP test after its expiration date.
  • Refer to package insert for complete instructions.
     

SNAP NBL Test insert

Step 1. Prepare sample


Using pipette, draw up milk to indicator line (450 μL ±50 μL).
Add milk to sample tube. 

Gently shake tube side-to-side 3–4 times to dissolve reagent pellet.

Place tube on heater block and incubate for 5 minutes.

Step 2. Run test


Pour entire contents of sample tube into sample well of SNAP device.

As the edge of the activation circle begins to disappear, press down firmly until you hear a distinct “snap.” If activation takes more than 60 seconds, result may be inaccurate.†

Incubate device for 4 minutes.

Step 3. Read results


Read results either visually or using the SNAPshot DSR Reader.

Negative
Sample spot (2) is darker than or equal to control spot (1). No drug residue detected.

Positive
Sample spot (2) is lighter than control spot (1). Drug residue detected.

* NCIMS-certified laboratories must use a calibrated pipette.
† A slow flow rate may be caused by a thick sample or by using less than 450 μL of sample.

Availability/Distribution: Outside the U.S. and Canada

Before you begin

  • Work space must be clean and free of drug residues.
  • Make sure conjugate pellet is at the bottom of the sample tube. If it is not, tap tube gently to return pellet to the bottom.
  • Agitate the milk sample thoroughly.

 

Notes

  • Accurate timing is essential.
  • Do not use a SNAP test after its expiration date.
  • Refer to package insert for complete instructions.
     

SNAPduo™ Beta-Tetra ST Test insert

Step 1. Prepare sample


Using pipette, draw up milk to indicator line (450 μL ±50 μL).
Add milk to sample tube. 

Gently shake tube side-to-side
3–4 times to dissolve reagent pellet.

Step 2. Run test


Within 15 seconds of mixing sample, pour entire contents of sample tube into sample well of SNAP device.

As the edge of the activation circle begins to disappear, press down firmly until you hear a distinct “snap.” If activation takes more than 60 seconds, result may be inaccurate.*

Time for 6 minutes.

Step 3. Read results


Read results either visually or using the SNAPshot DSR Reader.

Both Negative
Both sample spots (2, 3) darker than or equal to control spot (1). No residues detected.

Both Positive
Both sample spots (2, 3) lighter than control spot (1). Both residues detected.

Tetra Positive/Beta Negative
Tetra spot (2) lighter than control spot (1). Beta spot (3) darker than or equal to control spot (1). Tetra residue detected.

Tetra Negative/Beta Positive
Tetra spot (2) darker than or equal to control spot (1). Beta spot (3) lighter than control spot (1). Beta residue detected.

* A slow flow rate may be caused by a thick sample or by using less than 450 μL of sample.

Availability/Distribution: Outside the U.S. and Canada

Before you begin

  • Work space must be clean and free of drug residues.
  • Preheat heater block to 45°C ±5°C (113°F ±9°F).
  • Place SNAP device on heater block; leave on heater block for duration of test.
  • Make sure conjugate pellet is at the bottom of the sample tube. If it is not, tap tube gently to return pellet to the bottom.
  • Agitate the milk sample thoroughly

 

Notes

  • Accurate incubation times and temperatures are essential.
  • Do not use a SNAP test after its expiration date.
  • Refer to package insert for complete instructions.
     

SNAPduo™ Beta-Tetra Test insert

Step 1. Prepare sample


Using pipette, draw up milk to indicator line (450 μL ±50 μL).*
Add milk to sample tube. 

Gently shake tube side-to-side
3–4 times to dissolve reagent pellet.

Place tube on heater block and incubate for 5 minutes.

Step 2. Run test


Pour entire contents of sample tube into sample well of SNAP device.

As the edge of the activation circle begins to disappear, press down firmly until you hear a distinct “snap.” If activation takes more than 60 seconds, result may be inaccurate.†

Incubate device for 4 minutes.

Step 3. Read results


Read results within 30 seconds after incubation, either visually or using the SNAPshot DSR Reader.

Both Negative
Both sample spots (2, 3) darker than or equal to control spot (1). No residues detected.

Both Positive
Both sample spots (2, 3) lighter than control spot (1). Both residues detected.

Tetra Positive/Beta Negative
Tetra spot (2) lighter than control spot (1). Beta spot (3) darker than or equal to control spot (1). Tetra residue detected.

Tetra Negative/Beta Positive
Tetra spot (2) darker than or equal to control spot (1). Beta spot (3) lighter than control spot (1). Beta residue detected.

* NCIMS-certified laboratories must use a calibrated pipette.
† A slow flow rate may be caused by a thick sample or by using less than 450 μL of sample.

Availability/Distribution: Outside the U.S. and Canada

Before you begin

  • Work space must be clean and free of drug residues.
  • Make sure conjugate pellet is at the bottom of the sample tube. If it is not, tap tube gently to return pellet to the bottom.
  • Agitate the milk sample thoroughly.

 

Notes

  • Do not use a SNAP test after its expiration date.
  • Refer to package insert for complete instructions.
     

SNAPduo ST Plus Test insert

Step 1. Prepare sample


Using pipette, draw up milk to indicator line (450 μL ±50 μL).
Add milk to sample tube. 

Gently shake tube side-to-side
3–4 times to dissolve reagent pellet.

Step 2. Run test


Within 15 seconds of mixing sample, pour entire contents of sample tube into sample well of SNAP device.

As the edge of the activation circle begins to disappear, press down firmly until you hear a distinct “snap.”

Time for 6 minutes.

Step 3. Read results


Read results either visually or using the SNAPshot DSR Reader.

If the sample spot is lighter than the control spot, the sample is positive. If the sample spot is equal to or darker than the control spot, the sample is negative.

Availability/Distribution: Japan

Before you begin

  • Work space must be clean and free of drug residues.
  • The SNAP* TRIO JAPAN Test is designed for use under normal ambient conditions (15°C–30°C or 59°F–86°F).
  • Samples must be refrigerated at 0°C–10°C (32°F–50°F) and tested within 3 days of collection.
  • Bring test to room temperature (approximately 15 minutes) before use.

 

Notes

  • Make sure the conjugate pellet is at the bottom of the sample tube. If not, tap tube gently to return pellet to the bottom.
  • Thoroughly mix sample before testing.
  • Do not use a SNAP* test after its expiration date.
  • Refer to package insert for complete instructions.
     

SNAP TRIO JAPAN Test insert

Step 1. Prepare sample


Using the IDEXX pipette, draw up milk to indicator line (450 μL ±50 μL). Add milk to sample tube.

Gently shake tube side to side to dissolve the conjugate pellet. Do not leave sample in tube longer than 15 seconds before pouring it into the SNAP device.

Step 2. Run test


Pour entire contents of sample tube into sample well of the SNAP device (figure 3). The sample will flow across the results window toward the blue activation circle.

As the edge of the activation circle begins to disappear, press down firmly until you hear a distinct “snap.”

  • Too early
  • Snap
  • Too late

Step 3. Read results


After 8 minutes, read the results either visually or using the SNAPshot DSR Reader.

If the sample spot is lighter than the control spot, the sample is positive. If the sample spot is equal to or darker than the control spot, the sample is negative.

Availability/Distribution: U.S. and Canada

Before you begin

  • Work space must be clean and free of drug residues.
  • Preheat heater block to 45°C ±5°C (113°F ±9°F).
  • Place SNAP device on heater block; leave on heater block for duration of test.
  • Make sure conjugate pellet is at the bottom of the sample tube. If it is not, tap tube gently to return pellet to the bottom.
  • Agitate the milk sample thoroughly.

 

Notes

  • Accurate incubation times and temperatures are essential.
  • Do not use a SNAP test after its expiration date.
  • Refer to package insert for complete instructions.
     

SNAP Tetracycline Test insert

Step 1. Prepare sample


Using pipette, draw up milk to indicator line (450 μL ±50 μL).*
Add milk to sample tube. 

Gently shake tube side-to-side
3–4 times to dissolve reagent pellet.

Place tube on heater block and incubate for 5 minutes.

Step 2. Run test


Pour entire contents of sample tube into sample well of SNAP device.

As the edge of the activation circle begins to disappear, press down firmly until you hear a distinct “snap.” If activation takes more than 60 seconds, result may be inaccurate.

Incubate device for 4 minutes.

Step 3. Read results


Read results within 30 seconds after incubation, either visually or using the SNAPshot DSR Reader.

Negative
Sample spot (2) is darker than or equal to control spot (1). No drug residue detected.

Positive
Sample spot (2) is lighter than control spot (1). Drug residue detected.

* NCIMS-certified laboratories must use a calibrated pipette.

† A slow flow rate may be caused by a thick sample or by using less than 450 μL of sample.

Availability/Distribution: U.S. and Canada

Before you begin

  • Work space must be clean and free of drug residues.
  • Preheat heater block to 45°C ±5°C (113°F ±9°F).
  • Place SNAP device on heater block; leave on heater block for duration of test.
  • Make sure conjugate pellet is at the bottom of the sample tube. If it is not, tap tube gently to return pellet to the bottom.
  • Agitate the milk sample thoroughly.

 

Notes

  • Accurate incubation times and temperatures are essential.
  • Do not use a SNAP test after its expiration date.
  • Refer to package insert for complete instructions.
     

SNAP Sulfamethazine Test insert

Step 1. Prepare sample


Using pipette, draw up milk to indicator line (450 μL ±50 μL).*
Add milk to sample tube. 

Gently shake tube side-to-side
3–4 times to dissolve reagent pellet.

Place tube on heater block and incubate for 2 minutes.

Step 2. Run test


Pour entire contents of sample tube into sample well of SNAP device.

As the edge of the activation circle begins to disappear, press down firmly until you hear a distinct “snap.” If activation takes more than 60 seconds, result may be inaccurate.

Incubate device for 7 minutes.

Step 3. Read results


Read results within 30 seconds after incubation, either visually or using the SNAPshot DSR Reader.

Negative
Sample spot (2) is darker than or equal to control spot (1). No drug residue detected.

Positive
Sample spot (2) is lighter than control spot (1). Drug residue detected.

* NCIMS-certified laboratories must use a calibrated pipette.

† A slow flow rate may be caused by a thick sample or by using less than 450 μL of sample.

Availability/Distribution: U.S. and Canada

Before you begin

  • Work space must be clean and free of drug residues.
  • Preheat heater block to 45°C ±5°C (113°F ±9°F).
  • Place SNAP device on heater block; leave on heater block for duration of test.
  • Make sure conjugate pellet is at the bottom of the sample tube. If it is not, tap tube gently to return pellet to the bottom.
  • Agitate the milk sample thoroughly.

 

Notes

  • Accurate incubation times and temperatures are essential.
  • Do not use a SNAP test after its expiration date.
  • Refer to package insert for complete instructions.
     

SNAP AFM1 Test insert

Step 1. Prepare sample


Using pipette, draw up milk to indicator line (450 μL ±50 μL).*
Add milk to sample tube. 

Gently shake tube side-to-side
3–4 times to dissolve reagent pellet.

Place tube on heater block and incubate for 2 minutes.

Step 2. Run test


Pour entire contents of sample tube into sample well of SNAP device.

As the edge of the activation circle begins to disappear, press down firmly until you hear a distinct “snap.” If activation takes more than 60 seconds, result may be inaccurate.

Incubate device for 7 minutes.

Step 3. Read results


Read results within 30 seconds after incubation, either visually or using the SNAPshot DSR Reader.

Negative
Sample spot (2) is darker than or equal to control spot (1). No drug residue detected.

Positive
Sample spot (2) is lighter than control spot (1). Drug residue detected.

* NCIMS-certified laboratories must use a calibrated pipette.

† A slow flow rate may be caused by a thick sample or by using less than 450 μL of sample.

Availability/Distribution: U.S. and Canada

Before you begin

  • Work space must be clean and free of drug residues.
  • Preheat heater block to 45°C ±5°C (113°F ±9°F).
  • Place SNAP device on heater block; leave on heater block for duration of test.
  • Make sure conjugate pellet is at the bottom of the sample tube. If it is not, tap tube gently to return pellet to the bottom.
  • Agitate the milk sample thoroughly.

 

Notes

  • Accurate incubation times and temperatures are essential.
  • Do not use a SNAP test after its expiration date.
  • Refer to package insert for complete instructions.
     

SNAP Gentamicin Test insert

Step 1. Prepare sample


Using pipette, draw up milk to indicator line (450 μL ±50 μL).*
Add milk to sample tube. 

Gently shake tube side-to-side
3–4 times to dissolve reagent pellet.

Place tube on heater block and incubate for 2 minutes.

Step 2. Run test


Pour entire contents of sample tube into sample well of SNAP device.

As the edge of the activation circle begins to disappear, press down firmly until you hear a distinct “snap.” If activation takes more than 60 seconds, result may be inaccurate.

Incubate device for 7 minutes.

Step 3. Read results


Read results within 30 seconds after incubation, either visually or using the SNAPshot DSR Reader.

Negative
Sample spot (2) is darker than or equal to control spot (1). No drug residue detected.

Positive
Sample spot (2) is lighter than control spot (1). Drug residue detected.

* NCIMS-certified laboratories must use a calibrated pipette.

† A slow flow rate may be caused by a thick sample or by using less than 450 μL of sample.

Availability/Distribution: U.S. and Canada

Before you begin

  • Work space must be clean and free of drug residues.
  • Preheat heater block to 45°C ±5°C (113°F ±9°F).
  • Place SNAP device on heater block; leave on heater block for duration of test.
  • Make sure conjugate pellet is at the bottom of the sample tube. If it is not, tap tube gently to return pellet to the bottom.
  • Agitate the milk sample thoroughly.

 

Notes

  • Accurate incubation times and temperatures are essential.
  • Do not use a SNAP test after its expiration date.
  • Refer to package insert for complete instructions.
     

SNAP Melamine Test insert

Step 1. Prepare sample


Using pipette, draw up milk to indicator line (450 μL ±50 μL).*
Add milk to sample tube. 

Gently shake tube side-to-side
3–4 times to dissolve reagent pellet.

Place tube on heater block and incubate for 2 minutes.

Step 2. Run test


Pour entire contents of sample tube into sample well of SNAP device.

As the edge of the activation circle begins to disappear, press down firmly until you hear a distinct “snap.” If activation takes more than 60 seconds, result may be inaccurate.

Incubate device for 8 minutes.

Step 3. Read results


Read results within 30 seconds after incubation, either visually or using the SNAPshot DSR Reader.

Negative
Sample spot (2) is darker than or equal to control spot (1). No drug residue detected.

Positive
Sample spot (2) is lighter than control spot (1). Drug residue detected.

* NCIMS-certified laboratories must use a calibrated pipette.

† A slow flow rate may be caused by a thick sample or by using less than 450 μL of sample.