FOR AS LITTLE AS $45, a quick and cost-effective bulk milk test to assist you and your veterinarian to detect, monitor and manage conditions such as BLV infections.

That $45 is only PENNIES per head to determine your herds status for BLV!

Bovine Leukosis Virus (BLV)

  • BLV is caused by the bovine leukemia virus. It is mainly in the white blood cells and causes inflammation and dysfunction in lymph nodes throughout the body.
  • 5% of dairy herds and 38.7% of beef herds are infected with the virus.*
  • Once an animal is infected they are lifetime carriers and shedders. The virus is spread through animal to animal contact via blood, milk/colostrum and in-utero from dam to offspring.
  • Weight loss, decreased milk production and downer cows are signs and symptoms of the virus. Most symptoms appear between 3-6 years of age.
  • There is no treatment or cure for BLV. Animals affected get progressively worse and are culled or die. 
  • Learn more about BLV


  • Decreased value of cull cows. Leukosis tumors are the number one cause of
    condemnation at slaughter facilities.
  • Cow longevity
  • Milk production decreases as BLV herd prevalence increases
  • Inability to sell breeding stock. Many countries that have chosen to eradicate the disease have placed import restrictions on U.S. cattle.


  • 5%: Dairy herds
  • 7%: Beef herds*
  • * USDA National Animal Health Monitoring Survey 1996