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Ways of Collecting urine

Horses urinate relatively infrequently, about once every 6 hours. Consequently, unless you know the habits of your mare, it can be tricky catching her urinating so that you can collect a sample for pregnancy testing by 'Wee-Foal-Checker' . Some mares are very obliging, and will urinate predictably after exercise or feeding, or being put on or taken off a float, and so collecting a urine sample is easy.

Less co-operative mares can often be encouraged to urinate by putting them in a stable with fresh straw. Some mares will urinate after they have been 'whistled' at.

It is not necessary to collect the urine sample directly into a container as it is being voided. If you see your mare urinating, urine which has been voided onto the ground can still be collected by placing absorbent material (e.g. a paper towel) onto it, and squeezing the urine out into a clean container for subsequent testing by 'Wee-Foal-Checker'. Indeed, some owners have simply put a urine soaked paper towel into a plastic bag and mailed that to us for testing, and the 'Wee-Foal-Checker' test results have been fine!

Another very reliable method to collect urine is to attach a collection device to the mare. One such device, invented by breeder Gill Booth from KeriKeri, attaches to the mare's cover. The device is simple, inexpensive and easy to make, and generally undetected by the mare. A picture of Gill's device is shown below, and we can loan you one of these devices upon request.

Placing some absorbent material in the collection container is also useful, as this prevents all the collected urine splashing out when your mare runs up to greet you! Again the urine can be squeezed out of the absorbent material into a sample container for 'Wee-Foal-Checker' testing or shipping.
Some owners have also found that simply taping a sanitary pad below the vulva of their mare permits easy collection of a urine sample.

We are always interested in hearing of new ways that owners find to collect urine samples from their mares. If you have an alternative method that is not listed here, then please let us know.

For more information or to order 'Wee-Foal-Checker' ring our free phone number on 0800 933 625 (within New Zealand), or email Dr Keith Henderson at You can also order 'Wee-Foal-Checker' on-line now and pay by credit card using Paymate Express by clicking on the Paymate Express logo below. Enter the payee email address as, and also state the number of tests you wish to buy. Each 'Wee-Foal-Checker' test costs just NZ$35, which includes delivery within New Zealand.

Pay with Paymate Express