LEVELEN™ Athlete Sweat Test Kit

Athlete having a LEVELEN sweat test patch applied to the arm

One sweat test sets your LEVEL for good. Wear the patch, mail it back, and get your personalized formula.

$129.00

★ Recommended: Starter Kit, Endurance / MultiSport.

Kit Single Sport Starter Kit – Single Sport Endurance / MultiSport Starter Kit – Endurance / MultiSport

Which sport are you testing for? Recommended

Optional, but recommended. It helps us match your results to how you actually train.

Stop guessing at your hydration. Wear the patch through one normal session, mail it back postage-paid, and our patented lab returns your Individual Sweat Profile and your LEVELEN LEVEL in 1 to 2 weeks. Electrolyte losses can vary more than 200x between athletes. This is how you learn yours.

Patented sweat-test method, validated at the pro level
Self-administered during normal training, no lab visit
Pre-paid return mailer (US)
Starter Kits include your first pouch of matched LEVELEN Electrolyte Mix

Matched to your sweat test/ Hand-mixed in Philadelphia/ Trusted by Pro and Collegiate Training Staffs/ Free US shipping over $149

How it works

One test. Your Level for good.

Wear the patch through one normal session, mail it back postage-paid, and our lab returns your Level and your personalized formula.

Take the sweat test

Wear the patch through one normal workout and mail it back postage-paid. No lab visit, no change to your routine.

Get your Level

Your sweat test determines your LEVEL, based on how salty your sweat is. It comes down to your genes and what you're doing.

Fuel to your number

Drink the mix made for your LEVEL. The right electrolytes, carried by glucose so your body absorbs them quickly and efficiently.

The details

Read the fine print. We did.

What's inside

Electrolytes set to your Level, carried by dextrose (glucose) so your body actually absorbs them.

The science

How salty your sweat runs is genetic and sets your Level. Your sweat rate, driven by heat and intensity, sets how much you drink. Between a light sweater and a heavy, high-salt sweater, total electrolyte loss can differ more than 200x, which is why a single generic scoop can't serve everyone.

What's not inside

No one-size-fits-all scoop
No zero-calorie gimmicks that end up in the toilet
No guessing which electrolyte load you actually need

Shipping & guarantee

Ships fast, free on US orders over $149. Subscribe and save launches with the store.

Why LEVELEN

Not another tub off the shelf.

	LEVELEN	Generic electrolyte mix	Salt tabs
Matched to your sweat test	Yes	No	No
Sodium and Chloride set to your Level	Yes	No	No
Glucose co-transport for absorption	Yes	Sometimes	No
Built for your individual genetics	Yes	No	No

Complete your kit

Frequently paired.

LEVELEN™ Strawberry-Citrus Electrolyte Mix

Testimonials

What athletes say.

Real athletes, real results, in their own words.

Through a recent Sweat Test in Kona, we were able to tweak my fuel plan to best my 2009 time by 40 minutes and pick off all but one of the ladies in front of me.

Sharon Schmidt-Mongrain

Ironman All-World · USAT All-American #1

Sandy (Dr. Fowkes Godek) sweat tested me and recommended LEVELEN Level 5. The best part: my cramps were immediately gone.

Trent Cole

Former NFL All-Pro · 11-Year Veteran

At my first Leadville Trail 100 using LEVELEN, I completed the 104 mile course, with 12,500 feet of elevation gain, in 11:37:52 without a single cramp.

Max McAllister

4× Leadville Trail 100 Finisher

The sweat test kit is very simple and straightforward, and the results were clear. The LEVELEN team is all about the science and the fine-tuned needs of athletes.