Animal Health Diagnostic Laboratory

The Animal Health Diagnostic Laboratory analyzes about 400 samples per day. Many milk pregnancy and Johne’s analyses are run on samples that are already tested in the milk lab for standard DHI component analyses. Using the same sample allows for greater efficiency both on the farm and in the lab.  For those farms that are not on a regular testing schedule or who do not have dairy cows, Dairy One has a variety of ways to make it as easy as possible to get samples into the lab for processing.

ATTENTION BLOOD PREGNANCY TESTING CUSTOMERS: Dairy One will be transitioning its blood pregnancy testing services to a new testing platform beginning February 1, 2021.  With this change, we aim to offer our customers a simpler, more streamlined, and higher quality testing experience.  Read more about the change here.  Please carefully review the revised blood pregnancy information section located below as well as our new blood pregnancy submission form.  We hope to add this new blood pregnancy test to our list of A2LA accredited testing services soon.  Thank you for your patience with this change; we remain dedicated to serving your testing needs with the highest quality service possible.

Customer Support
P: 607-252-7575
ahd@dairyone.com
dhiarecordservices@dairyone.com

For sampling supplies, contact our Supply department at supply@dairyone.com or visit our online store.

Please refer to IDEXX guidelines on how to take a blood or milk sample.

Summary of Services: Animal Health Diagnostic Laboratory

Milk Pregnancy Testing

Milk Pregnancy Testing

The use of milk as a medium for pregnancy testing allows you to receive more data from the samples you are already submitting for component testing. The milk pregnancy test was developed by IDEXX Laboratories, one of the world’s leading diagnostic testing manufacturers. It works by detecting Pregnancy Associated Glycoproteins (PAGs), which are only present in a pregnant animal. The test has over 98% sensitivity, and false negatives are exceptionally rare.

The milk pregnancy test performed at Dairy One’s Animal Health Diagnostic Lab is A2LA accredited.  A2LA is an independent accreditation agency that certifies that this test is being performed at the highest level of quality.

Taking a Sample

If your herd is already testing with Dairy One, let your technician know that you would like samples submitted for pregnancy testing. If you are not on a DHI testing program with Dairy One, we offer milk diagnostic sampling supplies for purchase from our online store.

A milk sample for pregnancy testing can be taken from any quarter of an eligible animal’s udder. Eligible animals must meet the stated criteria for days post breeding and days in milk.

SpeciesBovineGoat/CaprineSheep/OvineWater Buffalo
Min DPB28286029
Min DPC60608040

Submitting a Sample

Samples do not need to be refrigerated when shipped if they contain preservative, but for best results refrigerate them during the time between sample collection and shipping. Please include a completed copy of the current Milk Sample Submission Form when submitting samples.

The milk pregnancy test cost is $4.50 per sample.

Samples may be sent using a return shipping label from our purchased milk sampling kits; shipping is free for packages containing at least 10 samples.  If a return shipping label is used for sending fewer than 10 samples, a charge of $6 will be applied. Use of our transportation network for milk pregnancy samples is complimentary.

Receiving Results

Results will be sent only via email unless no email is provided for the account.  If no email is provided, results will be sent using the US Postal Service.  Results will be automatically uploaded to Dairy Comp.  Your Dairy Records Service Specialist will also receive an email with results.   The lab tests milk pregnancy samples Monday through Friday and once during most weekends with the exception of major holidays. Once your samples arrive at the lab, you can generally expect the testing to be completed within 24 hours. If your herd is also being tested for components in the Milk Lab, your pregnancy samples will usually arrive in the Animal Health Diagnostics Lab either on the same day or the next day.

How do I interpret the results?

Pregnant indicates that the animal is pregnant.

Open indicates that the animal is not pregnant.

Recheck: While most samples will give a result of Pregnant or Open, a small number of samples may not be able to provide a definitive answer as to whether or not the animal is pregnant, resulting in a Recheck result.  This result may indicate that the animal is experiencing a loss of pregnancy.  IDEXX recommends retesting the animal no sooner than two weeks after the Recheck sample was taken.

Dairy One does not charge for any sample that has a Recheck result, as long as the sample meets testing eligibility criteria.

 ** Did you receive a notation at the bottom of your report discussing PAGs between 45 and 70 days post breeding?  Find more information about this from IDEXX here.

Blood Pregnancy Testing

Blood Pregnancy Testing

Using of blood for pregnancy diagnostic testing can be especially helpful for many situations where milk pregnancy testing is not an option. This might be the case for testing heifers, testing beef cattle or bison, or testing animals that may have been found to be not pregnant after being dried off. Like the milk pregnancy test, the ruminant pregnancy test for use on blood samples was developed by IDEXX Laboratories, a leading diagnostic testing manufacturer. The test works by detecting the presence of Pregnancy Associated Glycoproteins, which are only present in a pregnant animal. This test has over 99% sensitivity for cows and 100% sensitivity for goats.

Taking a Sample

Dairy One offers blood diagnostic sampling supplies for purchase in our online store. We do not require that you source your sampling supplies from Dairy One, but it is important that samples are submitted in correct tube type according to animal species. Animals must also meet the stated criteria for days post breeding and days post calving/kidding/lambing.

SpeciesBovineGoat/CaprineSheep/OvineWater BuffaloBison
Min DPB28283530Undetermined
Min DPC60UndeterminedUndetermined60Undetermined
Tube TypeAnySerum only: clotted, red-top tubeSerum only: clotted, red-top tubePlasma only: unclotted, purple-top tubePlasma only: unclotted, purple-top tube

It is best practice to use a new needle for each animal when drawing a blood sample. Indicate the animal ID on the blood vial along with its order number (this will be the vial # where the animal is listed on the official submission form). An example of this can be found on the submission form.

Submitting a Sample

Samples do not need to be refrigerated when shipped, but please refrigerate them during the time between sample collection and shipping for best results. Please include a completed copy of the Blood Sample Submission Form when submitting samples.

We offer four tiers of pricing that incorporate bulk testing discounts. The number of samples tested per month will determine the price that is applied to all of the samples tested during that month.

Total samples tested in the monthCost per sample
1-9$4.20
10-49$3.70
50-149$3.20
150+$2.70

Samples may be sent using a return shipping label from our purchased blood sampling kits; shipping is free for packages containing at least 10 samples. If a return shipping label is used for sending fewer than 10 samples, a charge of $6 will be applied.

Samples may be sent using Dairy One’s Transportation network. The cost for this is $7 per use, regardless of the number of samples sent. Using this transportation network may transport your samples quicker than other postal options.

Receiving Results

Results will be sent only via email unless no email is provided for the account. If no email is provided, results will be sent using the US Postal Service. Results will be automatically uploaded to Dairy Comp. Blood pregnancy testing is performed Monday through Friday, with the exception of major holidays.  Once your samples arrive at the lab, you can generally expect the testing to be completed within 24 hours.

How do I interpret results?

Pregnant indicates that the animal is pregnant.

Open indicates that the animal is not pregnant.

Recheck: While most samples will give a result of Pregnant or Open, a small number of samples may not be able to provide a definitive answer as to whether or not the animal is pregnant, resulting in a Recheck result. This result may indicate that the animal is experiencing a loss of pregnancy. IDEXX recommends retesting the animal no sooner than two weeks after the Recheck sample was taken.

Dairy One does not charge for any sample that has a Recheck result, as long as the sample meets testing eligibility criteria.

Johne's Disease Testing

Johne’s Disease Testing

Dairy One offers Johne’s disease testing for cows using either a milk or blood sample. Using a milk sample for Johne’s testing allows you to receive more data from the samples you are already submitting for component testing. The Johne’s test used in the Animal Health Diagnostic Lab was developed by IDEXX Laboratories, one of the world’s leading diagnostic testing manufacturers.  The test works by detecting the presence of antibodies associated with the disease; it does not test directly for the disease itself. Antibodies are produced by the cow as an immune response to the presence of the disease.  The test is currently only approved for bovine testing in the US.

The Johne’s test performed at Dairy One’s Animal Health Diagnostic Lab is A2LA Accredited.  A2LA is an independent accreditation agency that certifies that this test is being performed at the highest level of quality.

Taking a Sample

If your herd is already being tested with Dairy One, let your Dairy Records Service Specialist know that you would like to begin Johne’s testing.  It is best to test for Johne’s when the cow is experiencing stress, usually associated with the pre-calving dry-off period.  Customers are welcome to submit samples at any time.  Customers are welcome to use a container of their choice, or our milk or blood diagnostic sampling kits can be used for a convenient sampling and submission option.

Submitting a Sample

Samples do not need to be refrigerated when shipped, but please refrigerate them during the time between sample collection and shipping for best results. Please include a completed copy of the Milk Sample Submission Form or Blood Sample Submission Form when submitting samples.

The price of the test is $6.00 per sample.

Receiving Results

Results will be sent only via email unless no email is provided for the account.  If no email is provided, results will be sent using the US Postal Service.  Results will be automatically uploaded to Dairy Comp.  Johne’s testing is usually performed twice per week, with the exception of weeks that contain major holidays.  If you need your results sooner, please let us know as we may be able to accommodate your request

How do I interpret the results?

Positive indicates that the animal has produced antibodies associated with Johne’s disease.

Negative indicates that the animal has not produced these antibodies.

Suspect indicates that the animal may have the disease or may have been exposed to the disease but not contracted it.  It is recommended that an animal whose test result is Suspect be retested; consult your veterinarian for a recommended time to retest the animal.

BVD Testing

BVD Testing

Dairy One offers BVD testing for cows using bulk tank samples or individual DHIA samples. Analysis is performed through Cornell University’s Animal Health Diagnostic Center or through CentralStar Cooperative. Developed by IDEXX Laboratories, one of the world’s leading diagnostic testing manufacturers, the test works by the presence of antibodies associated with the disease; it does not test directly for the disease itself. Antibodies are produced by the cow as an immune response to the presence of the disease.

Taking a Sample

BVD Tank Samples Through Cornell University’s Animal Health Diagnostic Center The sample should be between 200-700 ml with a maximum of 400 cows contributing to bulk tank per sample. The sample should be kept cold, but not frozen.  The cost is $60 per sample. BVD Tank or Individual DHIA Cow Samples through CentralStar Cooperative A maximum of 400 cows may contribute to a bulk tank per sample.  The cost is $45.00 plus shipping per bulk tank sample $6.00 plus shipping per individual cow sample.

Submitting a Sample

BVD Tank Samples Through Cornell University’s Animal Health Diagnostic Center Samples must be submitted by a licensed veterinarian within 24 hrs of being taken.  BVD Tank or Individual DHIA Cow Samples through Antel Bio $45 plus shipping per bulk tank sample and $6.00 plus shipping per individual cow sample.

Receiving Results

Our records support group can help you with any questions you may have about the sample submission process as well as questions concerning receiving your results.  Email them at support@dairyone.com. How do I interpret the results?

Positive” result indicates that the animal has produced antibodies associated with BVD.

Negative” result indicates that the animal has not produced these antibodies. 

Due to the nature of the antibody test, it is recommended that an animal that has tested positive once be retested to ensure that the antibodies are present from the contraction of the disease, as opposed to exposure which did not result in contraction of the disease. It is recommended to take a retest sample at least 3 weeks after the initial positive sample.

FAQ

What animals can I use these tests be used for?

Milk Pregnancy: Cows and goats at least 28 days post-breeding and 60 days post-calving

Blood Pregnancy: Cows, goats, and sheep at least 28 days post-breeding and 90 days post-calving

Johne’s: Cows

BVD: Calves that are pre-colostral or over 3 months old can be tested using blood. Any cow can be tested with milk or ear notches.

How accurate are these pregnancy tests?

Milk Pregnancy: 98% accurate with very rare false-negative results

Blood Pregnancy: 98% accurate

When is the best time to test for Johne’s or BVD?

Johne’s: At high periods of stress, such as the pre-calving dry-off period

BVD: Immediately after the calf is born

How do I start testing?

Contact the Dairy One Supply Department to set up an account and order sampling supplies at 607-252-2697 or supply@dairyone.com.