Functional Lab Testing for Acne | Katie Stewart Wellness
Katie Stewart Wellness

Functional Testing · From $297

The lab testing that reveals why your acne won't quit.

The reason your skin still isn't clear is hiding in your labs.

You've earned the right to actual answers. Real data about your gut, your hormones, and your minerals. The kind of clarity that turns “I think I'm doing the right things” into “I know exactly what my body needs.”

See the tests Take the quiz

4,000+ labs run · 3,000+ clients · 15+ countries · 10+ years

Done at home1:1 results call includedPay in 2 at checkout

If this sounds like you

You've done everything, and your skin still isn't listening.

  • You've cut out dairy, gluten, sugar, and 17 other things, and the breakouts are still showing up.

  • Your bathroom looks like a Sephora graveyard, and your skin still isn't playing nice.

  • You've seen the dermatologists. The prescriptions worked for a minute and then stopped.

  • You're convinced something is off inside, but you can't get anyone to take it seriously.

  • You've spent thousands on protocols, products, and practitioners, and you're more confused than when you started.

The math nobody talks about

Most of our clients spent $5,000+ on skincare, supplements, appointments, gadgets, and facials before they ran their first functional test.

The HTMA is $297.

Here’s the truth

You’re not broken. You’re just guessing. And you can’t fix what you can’t see. Functional testing shows what’s actually happening inside your body, so the next step you take is the right one.

Why your doctor's labs missed this

Normal labs don't mean nothing's wrong. They mean nothing's diseased.

Your doctor's bloodwork is built to catch disease. Functional testing is built to catch dysfunction. The kind that drives breakouts, hormonal acne, and gut-skin issues that “look fine on paper.”

What standard labs miss

  • Mineral imbalances driving inflammation
  • Estrogen clearance and detox issues
  • Gut pathogens, dysbiosis, low diversity
  • Foods quietly inflaming your skin

What functional testing shows

  • Full mineral and heavy metal panel (HTMA)
  • Phase 1 and 2 detox metabolites (DUTCH)
  • Named organisms, H. pylori, parasites (GI Map)
  • 96+ food IgG reactions (Food Sensitivity)

Real clients. Real results.

What clearing actually looks like.

Samantha, right-profile before and after, eyes redacted for privacyBefore
Samantha, right-profile before and after, eyes redacted for privacyAfter

Samantha

What we found in her HTMA

What we found

  • A heavy oxalate burden showing up in her minerals
  • Low stomach acid and sluggish digestion not breaking food down properly
  • A liver and detox pathway struggling to keep up
  • A magnesium deficit stalling clearance and slowing her bowels
  • Adrenal patterns pointing to long-term stress running the show
  • Estrogen dominance, exactly what we’d expect when detox is backed up

Translation:Her body wasn’t clearing what it needed to, her digestion wasn’t pulling its weight, and her hormones were paying the price.

“I joined The Clear Skin Solution last September so desperate to feel better, and that feeling carried me through every up and down. I made changes I never thought were possible, and my body was crying out for help. I finally answered the call. My skin is glowing, my digestion has improved, and I feel more comfortable and confident in my own skin than ever before.”

The Clear Skin Solution Client

Fayth, left-profile before and after, eyes redacted for privacyBefore
Fayth, left-profile before and after, eyes redacted for privacyAfter

Fayth

What we found in her GI Map

What we found

  • Overgrowth of staph and strep in her gut (yes, these live in the gut, and yes, they show up on the skin)
  • An active parasite infection feeding inflammation behind the scenes
  • Low digestive enzyme output, leaving food to ferment instead of digest
  • Low secretory IgA, meaning her gut’s first line of immune defense was depleted
  • A clear pattern of dysbiosis driving systemic inflammation
  • Skin flares directly tied to what was happening downstream in her gut

Translation:Her gut was inflamed, infected, and unable to defend itself. Her skin was the messenger.

“I thought I was healthy. Then my testing came back and I had C. diff, H. pylori, and a ton of yeast overgrowth. If I had never gotten tested, I might’ve struggled with this for the rest of my life. Six months later my fatigue is gone, I lost 30 pounds I didn’t know I had to lose, my period regulated for the first time in my life, and my skin is finally clearing.”

The Clear Skin Solution Client

A deeper story

What happens when you finally have answers.

And it's not just women. Saif had seen specialists across three continents.

Saif, front-facing before and after, eyes redacted for privacySaif, right-profile before and after, eyes redacted for privacySaif, left-profile before and after, eyes redacted for privacySaif, back-of-neck before and after
Before & After
5 / 5

“Every time I look in the mirror, I can’t believe what I’m seeing.”

I’d seen specialists across the US, the Middle East, and Bahrain. Dermatologists said medicine. The cream people said creams. When I got my HTMA results back and sat down with my nutritionist, your program took supplementation, food, mindset, daily habits, lymph work, and exercise, and put it all into one plan. My skin has completely changed. I’ve gone from 100 to maybe 5% at most.

S

Saif

KSW Client · HTMA path

Pick your test

Start with HTMA.
Add the others when you need them.

HTMA is the right starting point for most of our clients. The other tests are layered in based on what your symptoms point to.

Best place to start

Hair sample

HTMA

Hair Trace Mineral Analysis

$297one-time

Best for

Mineral imbalances, heavy metals, adrenal burnout, nervous system overload, and stress-driven acne. Our most popular starting point.

What's included

  • Easy at-home hair sample collection (no kit needed, we'll send simple instructions)
  • Full lab analysis of 20+ minerals and heavy metals
  • 1:1 results consult with a KSW acne nutritionist
  • Personalized protocol built around your results
Get the HTMA package

Split into 2 payments at checkout

When to add another test

Run alongside your HTMA, or after, depending on what your protocol calls for.

Finger prick

Food Sensitivity

IgG Food Sensitivity Testing

$450one-time

Best for

Persistent inflammation, gut-driven breakouts, and unexplained reactions when you can't pinpoint which foods are flaring your skin or digestion.

What's included

  • At-home sample collection kit shipped to your door
  • Comprehensive food sensitivity panel
  • 1:1 results consult with a KSW acne nutritionist
  • No personalized protocol required, option to upgrade to a customized meal plan
Get the IgG Package

Split into 2 payments at checkout

Urine sample

DUTCH

Dried Urine Test for Comprehensive Hormones

$650one-time

Best for

Hormonal acne, jawline breakouts, post-pill recovery, PMS, irregular cycles, and stress patterns. Ideal if hormones are your top pillar.

What's included

  • At-home urine collection kit shipped to your door
  • Comprehensive hormone and cortisol panel
  • 1:1 results consult with a KSW acne nutritionist
  • Personalized protocol built around your results
Get the DUTCH package

Split into 2 payments at checkout

Stool sample

GI Map

Gastrointestinal Microbial Assay Plus

$675one-time

Best for

Bloating, irregular digestion, gut-driven breakouts, parasites, H. pylori, Candida, and SIBO markers. Ideal if gut is your top pillar.

What's included

  • At-home stool collection kit shipped to your door
  • Comprehensive gut and pathogen panel
  • 1:1 results consult with a KSW acne nutritionist
  • Personalized protocol built around your results
Get the GI Map package

Split into 2 payments at checkout

On medication, birth control, HRT, or fertility meds?

We’ll never tell you to stop a medication. Some tests just have a better window. Quick rules of thumb apply for birth control, HRT, fertility meds, and antibiotics.

Read the full FAQ →

After you order

What to expect, step by step.

No guessing about what happens next. Here’s exactly how the process flows from the moment you check out to your results consult.

  1. 1

    Place your order

    Welcome email and portal forms hit your inbox right away.

  2. 2

    We get you set up

    Within 24 business hours: HTMA instructions emailed, or your DUTCH, GI Map, or IgG kit shipped.

  3. 3

    Collect at home

    Hair, urine, stool, or finger prick. Everything you need is in the kit (or your inbox for HTMA).

  4. 4

    Send to the lab

    Prepaid label for DUTCH and GI Map. IgG ships with a standard stamp, tracking optional.

  5. 5

    Book your consult

    Schedule about four weeks from your ship-in date. We’ll move it up or back as labs return.

  6. 6

    Walk through results

    Meet 1:1 with your KSW nutritionist and leave with your personalized protocol.

One note on Food Sensitivity (IgG): the package doesn’t include a personalized protocol. You can upgrade to a customized meal plan if you’d like one built around your results.

Ships worldwide

Tests delivered straight to your door

Done at home

No lab visits, no doctor's referral

Expert review

A licensed clinician analyzes your labs

Split payment

Pay in 2 at checkout if you'd like

By the numbers

You're not the first. You won't be the last.

Since 2016, Katie Stewart Wellness has helped people with chronic acne uncover what's actually happening inside their bodies, and build the kind of skin that lasts. We don't outsource your test to another practitioner. Your results stay with our team, who specialize in one thing: clear skin.

4,000+

Functional labs run for our acne clients

3,000+

Clients supported worldwide

15+

Countries we've worked with

10+

Years specializing in clear skin

Not sure which test to run? Take the 60-second quiz

Three tests. Three different windows into your acne.

HTMA, DUTCH, or GI Map. Answer 8 quick questions and we’ll point you to the one that’ll move you forward fastest.

Question 1 of 8

Where does your acne show up most?

Questions

The stuff people ask before they buy.

Still have a question? Email support@katiestewartwellness.com →

Ready when you are

Stop guessing. Get the data.

Pick the test that fits your body, or take the 60-second quiz and we'll point you to the right one.

See the tests Take the quiz

Free guide

Not ready for a test? Start with the Face Map.

A printable guide that links each breakout zone (forehead, jawline, cheeks, chin) to its likely root cause and the nutrition fix to start with.

Get the Face Map

Get the free Acne Face Map.

The exact map I use to translate where your breakouts show up into what’s actually going on internally. Free, instant, and the start of finally figuring out your skin.

Plus weekly emails on gut, hormones, detox, nervous system, and skin barrier.

Katie Stewart · Founder

Root-cause acne nutrition backed by functional lab testing, 10 years in practice, and a team dedicated to lasting results.

Based in Ontario, Canada · Working virtually worldwide

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