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Milk pregnancy testing works from day 28 after insemination

Self Sample or Milk Recording

Prices starting from €3.70 + postage for non-recorded samples.

How it works





Sample collection




Milk samples are collected and transported to your


As part of routine milk control, your samples can be tested for pregnancy specific proteins (PAG's), indicating if a cow is pregnant or not. You can also self sample and post the sample to the lab.

Trusted ELISA technology provides accurate results on par with palpation and ultrasound.

Results are reported by text message, email or post.


by reducing non-pregnant days



* De Vries et al, Economics of improved reproductive performance in dairy cattle (Publication AN 156, Gainesville FL, University of Florida Institute of Food and Agriculture Science; 2005) 

Your Benefits

Cows are back out to grass sooner

Better reproductive performance

The service offers less handling of the cows for the farmer, which in turns means less stress for the cows

Identifying the non-pregnant cows sooner helps the farmer re-inseminate them quicker

Better profitability

Helps to reduce visitors on farm

Every day a cow is non-pregnant costs between €3.70 - €6.10*

Collect your milk samples using the self-sampling kits to minimise personal contact.

Cost saving

No drafting of cows

Convenient service - Your milk recording and pregnancy results from 1 sample, or you can also avail from the self-sampling pregnancy kits.

Save time and money whilst maximising milk production. The easiest way to identify non-pregnant cows and take appropriate action.

*Esslemont R.J, Kossaibati M. (2002) The costs of poor fertility and disease in UK dairy herds: trends in DAISY herds over 10 seasons






When to use the tests

Reproductive performance improves when farmers, veterinarians, and breeding companies work together to identify non-pregnant animals throughout gestation and to take appropriate action.

Pre dry-off:Late gestation

To avoid drying off a non-pregnant cow.

Confirmation Test:70-110 days

To detect early embryonic death.

Early Test: From 28 days post AI

To identify non-pregnant cows as early as possible, so the cow can be re-inseminated quickly.

Milk Pregnancy Testing in individual kits

During or after breeding season from day 28

Process icon sample

Step 1: We send you kit

Everything you need to sample and return: bottles, return envelopes, etc

Step 2: Take samples

Start on week 4 of the breeding season. Sample from any quarter, a few mL is enough.

Step 3: Post samples

We keep the sample size small so postage costs are low. Send as many as you need in a batch.

Step 4: Results by text

Simple pregnant/non-pregnant. Recommend inject non-pregnant cows to get re-bred ASAP.

Step-by-step Testing Process

Start testing on week 4 of breeding season


Take Samples & Post

Cows 28 days or more since AI


Get Text & Inject Non-pregnant

  • If pregnant: do nothing
  • If non-pregnant: inject with prostaglandin to come in heat ASAP
  • If inconclusive: sample again next week


AI Non-pregnant Cows

Get empty cows re-bred as quick as possible to minimise the empty rate at the end of season

Pregnancy & Milk Recording

Get cows pregnancy tested from milk recording samples

  • Ask Recorder: Plan to take samples before recording starts.
  • What cows: Cows need to be identified at the time of milk sampling.
  • No extra work: Get results without doing anything else.
  • Results report: Full results report and loaded to ICBF. Perfect for full herd/large numbers.

Detects highly specific markers of pregnancy

Unlike progesterone levels that fluctuate naturally during a cycle and are not pregnancy-specific, PAGs are only produced in the presence of an embryo or fetus and are pregnancy-specific.

According to others

We have been using the milk pregnancy tests – the postal version for 3 years and find it very good! The test allows me to focus on cows that come back empty, and actions can be taken on them, I wouldn’t be without it to be honest.”

Pierce Deegan, Carlow

“The test is great and non-intrusive, with no added stress for cows or me! Anything that saves labour, is a plus in my book!”

William Griffin, Carlow

Quick, accurate and easy, the test allows me to know if a cow is pregnant or not after just 28 days! I find it particularly useful for those “she might have held cows!”.

George Beattie, Wicklow

“I do the test through my milk recordings, so all I have to do is get a list of the cows! There is no hassle, no stress, no handling! Milk Pregnancy Testing is my primary form of pregnancy confirmation.”

Fran Allen, Kildare

Contact us

Progressive Genetics is the largest farmer-owned cattle breeding co-operative in the Republic of Ireland. With our range of products and continuing development, Progressive Genetics is well placed to give our farmer customers a competitive advantage and a more profitable future.

For more details about the Alertys™ Milk Pregnancy Test, contact us:

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