23/07/2026
🐾 OVULATION TESTING – IT’S ABOUT MUCH MORE THAN A NUMBER! 🐾
It’s fantastic to see more breeders recognising the importance of ovulation testing and moving away from simply mating on a predetermined day of the season.
But there’s something equally important to understand:
Successful ovulation testing is about tracking a season – not just taking one progesterone test.
Every bitch is different, and every season can be different too.
There is no magic “Day 11”, “Day 12” or “Day 13” that tells us when your bitch has ovulated.
So why do we progesterone test?
Progesterone testing allows us to monitor the hormonal changes taking place during the season.
By taking appropriately timed samples and looking at the progression of progesterone, we can build a picture of the cycle and identify the important changes associated with the LH surge and ovulation.
This then helps us determine the most appropriate breeding window, taking into consideration that the eggs also need time to mature following ovulation.
That’s very different from simply asking:
“Is she ready?”
One test doesn’t always give us the whole story
Imagine bringing your bitch for her first test on Day 13 and receiving a progesterone result that indicates she has already ovulated.
Great – but when did she ovulate?
Was it yesterday? Two days ago? Three days ago?
Without earlier results showing how the progesterone level has progressed, we may have missed some of the information needed to pinpoint that timing accurately.
That’s why, when we recommend returning for another test, we’re not testing unnecessarily. We’re gathering the information needed to track the season properly.
The equipment matters too
At Calavey Pet Services, our progesterone testing isn’t performed using one of the small rapid-test analysers commonly found in canine fertility services.
We use the Tosoh AIA-360 automated immunoassay analyser – professional laboratory equipment designed for quantitative hormone analysis.
Rapid fluorescence immunoassay systems, such as the Wondfo Finecare platform, use a different testing technology and are designed as rapid point-of-care systems.
We made a significant investment in the Tosoh because we wanted our progesterone service to be built around professional laboratory equipment, proper maintenance, calibration and quality control.
But even the best equipment needs the right information.
A machine can accurately analyse the sample you give it – it cannot tell us what your bitch’s progesterone was two days earlier if she wasn’t tested.
Ovulation testing is a partnership
Calavey Pet Services will provide the testing, interpret the results, track the progression and advise you on the appropriate next steps.
We need you to play your part too.
Start testing at the appropriate point, return when advised and don’t assume that because your bitch was ready on Day 12 last season, she’ll be ready on Day 12 this time.
Our aim isn’t simply to give you a progesterone number.
Our aim is to understand your bitch’s cycle and give you the best possible information on which to base your breeding decisions.
🐾 TEST. TRACK. UNDERSTAND. THEN BREED 🐾
Calavey Pet Services
Competent • Reliable • Accurate