ABOUT SWEAT TESTING
A Sweat Test measures your sweat sodium concentration — how much sodium you lose in every litre of sweat (not how much you sweat).
Everyone sweats differently. How salty your sweat is is largely genetically determined and can vary from as little as 200mg per liter of sweat to more than 2,000mg/l, so a one-size-fits-all approach to hydration just doesn't cut it.
HYDRATION ISN'T ONE-SIZE-FITS-ALL
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Know your sodium losses
Understand how salty your sweat actually is instead of relying on a generic electrolyte recommendation.
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Build a better hydration strategy
Use your result alongside your sweat rate, training conditions and event duration to make smarter hydration decisions.
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Use it for the long haul
Sweat sodium concentration is largely genetically determined and remains relatively stable, so most athletes don't need to repeat the test regularly.
HOW IT WORKS: YOUR TEST, START TO FINISH
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01 - COLLECT
We place 2 electrodes on your forearm that stimulate your sweat glands, without needing to run, ride or work out. A disc is placed on top of the now-sweating spot, and collects the sweat sample into a tube.
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02 - ANALYZE
Once enough sweat has been collected, the Sweat Analyzer reads the sample and tells us the mg of sodium per litre of fluid. Based on this number, you’ll learn what the best sodium:fluid ratio is for you.
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03 - BUILD YOUR PLAN
We'll walk through your result, your training and your goals and help you understand how to apply it to your hydration strategy.
WHO IS IT FOR?
MADE FOR PEOPLE WHO SWEAT
Whether you're training for an ultra, riding all day, ski touring, racing a marathon or simply trying to understand why hydration has always felt like a guessing game, a Sweat Test can give you another useful piece of the puzzle.
WHAT TO EXPECT
PRECISION SWEAT TEST
Cost: $200
Time: 30-45 min
Location: In-store at spry
No workout required and no need to bring anything — just wear short sleeves and whatever's most comfortable. You can eat, drink and train as normal before the test, but please try not to show up severely dehydrated or right off the back of a heavy training session!
YOUR SWEAT TEST INCLUDES
- Your individual sweat sodium concentration in mg/L
- An explanation of what your result means
- Guidance on estimating and tracking your sweat rate
- Discussion of your training, racing and environmental conditions
- Personalized hydration recommendations
- Pre-, during- and post-exercise hydration guidance
- Take-home / emailed test results
- Recommended Precision Fuel & Hydration electrolyte strength
FAQs
Do I need to exercise during the test?
Do I need to exercise during the test?
No. The test is performed while you're at rest.
Does the test measure my sweat rate?
Does the test measure my sweat rate?
No. It measures the concentration of sodium in your sweat. Sweat rate can vary substantially with temperature, effort, clothing, acclimation and other factors, so it's normally measured during real training sessions.
How long does it take?
How long does it take?
Approximately 30-45 minutes, including a chat about your results and training goals.
Does the test hurt?
Does the test hurt?
The procedure is non-invasive and painless. You might feel a slight tingling sensation from your sweat glands being stimulated.
Do I need to prepare for my appointment?
Do I need to prepare for my appointment?
No need to bring anything — just wear short sleeves and whatever's most comfortable. You can eat, drink and train as normal before the test, but please try not to show up severely dehydrated or right off the back of a heavy training session!
Will I need another Sweat Test later?
Will I need another Sweat Test later?
Usually not. Sweat sodium concentration is largely genetically determined and tends to remain relatively stable.
What should I bring?
What should I bring?
Short sleeves, curiosity, and motivation to dial in your hydration plan.
Can anyone book a test?
Can anyone book a test?
Yes, though parent/guardian consent is required for those under 18.
