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Skratch Labs Sweat Test
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Skratch Labs

Sweat Test

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On paper

Sweat Test, from Skratch Labs — nothing in stock at the retailers we track right now. We keep checking.

From Skratch Labs

Note: Sweat testing is done at Skratch Labs HQ, in Boulder, Colorado. After your purchase, keep an eye on your inbox! We'll follow up via email with a link to schedule your sweat test at a time that works for you. If you are unable to sign up for an available time Monday-Wednesday during business hours, please reach out to athletecare@skratchlabs.com. Please be advised, due to high demand, our earliest availability tends to be four weeks out. If you book a spot, we kindly ask that you commit to your scheduled time. If something unavoidable comes up, please give us as much notice as possible.

Sweat is not just water and not everyone's sweat is the same. Sweat also contains electrolytes and the one most prevalent in sweat and most impactful to stay on top of is sodium. Sodium is a critical electrolyte for maintaining hydration, keeping muscles firing, and supporting brain function and blood volume. Here’s the catch: everyone’s sodium loss is different. Some people lose as little as 200 mg/L, while others lose up to 2000 mg/L. By testing your sodium loss, you’ll get the insights you need to fine-tune your hydration and stay at the top of your game.

Understanding your sodium loss means you can tailor a hydration strategy that works for you. Here’s how to know if sweat testing could benefit you:

You struggle in hot conditions or experience performance drops in heat

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