Genetic Marker Test | 608-662-9170 |

Freemartin (FM) - $25.00/sample

Freemartinism is one of the most extreme forms of secual abnormality in cattle. This condition is found in fraternal twins in cattle where an imperfect masculinized sterile female twin calf is born with a male. Up until now, the lack of a simple means to test young animals for the freemartin condition has prompted many producers to discard a heifer twin to a bull shortly after birth.

Genetic Visions has developed a DNA based test to identify the presence of the Y chromosome. A positive test result for a heifer born twin to a bull indicates the freemartin condition. The number of cells containing the Y chromosome will be greatest at birth. The upper age limit of detecting the Y chromosome has not yet been determined.

Genetic Visions' freemartin test requires that a minimum of 2 ml of blood be placed in a tube containing an anticoagulant, i.e. EDTA (purple top). The samples nee not to be refrigerated during shipment to the testing lab.

The freemartin test costs $25.00 per sample. Producers need to identify the sample. It is also preferred to include the date of birth with the sample. Blood tubes can be sent in a routine mailer, like that used for blood-typing. Results will indicate whether or not the Y chromosome has been detected in the female blood.