Sweat Composition Testing

What Are You Drinking?

One of the most common conversations we have here at Colorado Multisport includes the question, "how much sodium do I need?" We can finally answer this question intelligently for our athletes, and set them up for success. We offer a unique test that measures sodium concentration in the sweat, which is translated to the sodium requirements of each individual. Amazingly, this simple test is conveniently done without exercising! CMS is proud to be one of the very few places to offer this valuable testing in the US. Unlock your potential today.

Schedule Your Sweat Composition Test

The cost of the test is $149, and includes your sweat composition results, sodium recommendation, and short hydration consultation to outline strategies for before, during, and after training/racing. Please plan to spend an hour with us for your test.

For $99, you may also add this service to a professional bike fitting to make it a Performance Package ($398 total).

Why is Sweat Composition Testing Important?

Every person is unique in their nutritional needs, so why should each person follow generalized nutrition advice that only leads to more experimentation? Using technology that was originally developed for use in the diagnosis of certain inherited diseases in children, we can now measure the key variable (sodium concentration lost in sweat) that determines each individual’s specific electrolyte needs.

This is very important because research has shown that electrolyte loss via sweating can vary up to eight-fold between individuals under the same conditions, or even thirteen-fold under the same conditions when sweat volume is factored in. Therefore, a general guideline may work well for some, but will not even be close for others. Do you want to be left cramping on the side of the road?

ElementTypical daily electrolyte intakeTypical absorption efficiencyTypical loss per literLoss of sweat to be deficientSweat deficiency possible?
Sodium4000mg>90%230-17004LYes
Potassium2700mg>90%15016LNo
Calcium500mg30%285LYes
Magnesium300mg10-70%8.3-14.215LNo

Each person’s sweat composition is relatively fixed over their lifetime genetically, so completing one test should be sufficient for most athletes. There will always be some trial and error with various nutrition items, hydration needs, and situational strategies. Nutrition strategies become more meaningful when this key variable is understood.

Check out the video below to understand more about the sweat test itself. Plan to spend The video showcases one potential nutrition product, but we can help match you to the products that work best for you.