• P4 Rapid confirms heat in cows. It’s fast, accurate and easy to use. Find out if your cow is in heat Watch Video

P4 Rapid: the essential heat detection tool for vets and dairy farmers.

Because it pays to be sure.

What is P4 Rapid?

P4 Rapid is an in-milk heat detection test. It’s fast, easy and accurate. Brilliant for your cows that show no reliable signs or behaviours.

Never miss a heat. Find out more

How to use P4 Rapid

P4 Rapid is easy to use. In just five minutes it gives results you can depend on. Helping you increase your herd fertility and productivity.

Get into the habit. Here’s how

Where to buy P4 Rapid

In the UK you can buy P4 Rapid from your local vet. And it’s available in 63 other countries through our network of distributors.

It pays to be sure. Order now

“Progesterone testing is proving a valuable tool, and becoming part of the routine here. It allows us to identify cows returning to heat that we would have previously missed.”

Robert Graham, Dairy Farmer, North Yorkshire

Who are you?


P4 Rapid helps you build a more productive and profitable herd. Because one quick and easy test will confirm whether or not your cow is in heat.

See what P4 Rapid will do for you


P4 Rapid gives you valuable information on a cow’s fertility, fast. And as a UK supplier you’ll enjoy an increase in your practice sales too.

See how P4 Rapid will help you help farmers


We give our team of distributors expert sales support. Exactly what you’d expect from a company known the world over as experts in their field.

You could be part of our team. Find out how