Milk Pregnancy Test

A great tool to help with your fertility management

Meet James Bargh

Dairy farmer, James Bargh, milks 90 cows at his farm in Bentham, North Yorkshire, England. He has been using the Alertys™ Milk Pregnancy Test from IDEXX for more than five years


After seeing an advert for the milk pregnancy testing, and doing further research of his own, James decided to add the pregnancy test to his fertility management regime. He uses the test through his milk recording organisation, CIS, to check cows from 35 days gestation

The test keeps the cows in their daily routine during the early stage of pregnancy, with no need to separate them off from the herd for the vet to check. This is much less stressful and therefore better for the cows.

James checks for pregnant cows every six weeks using the test, with his vet checking again later in the pregnancy if required. For James, using his vet and the milk pregnancy test together is working well. “The test is a no-stress way to check if a cow is pregnant via our milk recording,” says James. “It also frees up the vet’s time to concentrate on any empty cows and repeats.”


As well as reducing potential stress on the herd, the test also has other advantages for James; “the test saves time as the CIS milk records are updated automatically with the result, we’re finding the vet’s calls are shorter, and importantly when cows are grazing, they don’t miss their fresh morning grass whilst being held back for the vet” says James.

I would recommend the test to other farmers who are looking for a quick, non-invasive, test in early pregnancy. It is a great tool to help with your fertility management.

PAG Pregnancy Checker

The simple Milk Pregnancy Test measures Pregnancy Associated Glycoproteins (PAGs)

PAGs are produced by the placenta once pregnancy is established

Milk samples can be tested from 28 days post-insemination to find non-pregnant cows, and throughout gestation to confirm pregnancy status

Up to 24% of cows can lose a pregnancy from 28 days after breeding 

Reliable pregnancy confirmation, 98% accuracy

Available from CIS, NMR and QMMS

What other customers are saying

John Holdcroft

Mark Davis 

Adam Lawson

Patrick Stevens

200 cows, UK

220 cows, UK

160 cows, UK

240 cows, UK

Reliable, Simple and Trusted

Developed by IDEXX, a world leader in veterinary diagnostics, the Alertys™  Pregnancy Tests have been performed more than 44 million times since 2010. Milk testing is trusted by tens of thousands of farmers around the world.
For more information on the Alertys™ Milk Pregnancy Test, please contact your milk recording organisations or visit our website:

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