Available starting at 26 days!
  • At milk recording or between tests
  • For all producers, registered or not on milk recording
  • Also available to producers in the Atlantic provinces

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An essential complement to your reproduction strategy
When it comes time to evaluate whether or not your cow is pregnant, you need accurate information; and the sooner, the better.   
There is an option for every situation
Between ultrasound and palpation by your veterinarian, blood tests and GESTALAB, you definitely are very well equipped to accurately detect pregnancies in your herd. It is up to you to choose which of these options suit your situation best, according to the size of your herd, your reproduction objectives or even your management habits.
For example, it may be to some producers’ advan­tage to have more rapid access to insemination results between two preventive visits by their veterinarian. In a free-stall herd, minimizing cow manipulation in pregnancy diagnosis could be very helpful.
Let's take a closer look at PAG
What is PAG?
PAG is an acronym for Pregnancy Associated Glycoprotein. These molecules are secreted by the placenta and then taken into the maternal circulatory system where we can detect them and use them as a pregnancy indicator in dairy cattle. Testing for PAG in blood samples has already been offered by some laboratories for several years now.
What does PAG do?
There have been many different hypotheses and researchers have attempted to verify some assumptions but, in reality, the function of PAG in pregnant cows is still unknown.
What we do know however is that PAG is very useful as a pregnancy indicator because any changes in the status of a fetus (ex. fetal mortality) are reflected by placental function and therefore in the expression of PAG.
Does PAG increase during pregnancy?
In fact, PAG levels vary throughout pregnancy and consequently the interpretation of PAG analysis results will also vary according to the stage of pregnancy. This is why it is so important to know the breeding date for every cow whose milk will be analyzed with GESTALAB.
Tips for the optimal use of GESTALAB
Make sure that the correct breeding date has been entered for the cow you would like to test. This information is imperative to the proper interpretation of GESTALAB. 

What about robots?
For herds with robotic milking systems, it is important to ensure that all samples to be submitted for GESTALAB testing have been collected manually, directly from the quarter. 
Milk recording sample
Don't forget to empty the tube!
Did you know that you should always empty the lactometer tube (in com­pliance with recommended milk recording procedure) before moving on to the next cow? This is one of the strict sampling rules in milk recording. That being said, there will always be a little milk left at the bottom of the tube.
We have completed the necessary testing to verify the impact of this residual milk (or carry-over) on GESTALAB results and know that with conventional milking using a lactometer, if the sampling protocol is followed, there is no reason to doubt the validity of your results.

Ask your Valacta technician to review your sampling practices.
Although completely eliminating the residual milk in the lactometer is impossible, it is important to properly empty the tube between each and every cow.
Sample taken directly from the quarter
Sample collection technique
  • Remove the first drafts;
  • Take milk from only one quarter (no need to make a composite sample);
  • Tightly shake the tube to dissolve the preservative;
  • Seal the cap tightly. 

Before sending us your samples

Be sure to complete the test request card carefully, making sure to write the date of sample collection on it, as it may differ from the control date.  

         1. Xpresspost – Canada Post/From the post office  
Hand your envelope to the clerk at the post office prior to the daily pick-up headed for the triage center so that the shipping delay can be met.  
          2. Xpresspost - Canada Post/Mailbox     
a) Ship-in-a-click – Canada Post/E-shipping tools: Go to https://www.canadapost.ca/tools/cst/intro-e.asp and get step-by-step instructions to help you prepare your shipment. It’s simple and easy to use!   

b) Label and drop your envelope in the mailbox prior to mail pick-up so that the shipping delay can be met.         
3. Through the CIAQ inseminator network.   

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The facts on GESTALAB... 

  • $6.25 per sample

  • As accurate as ultrasound

  • Results available within 24 to 48 hours