Functional Medicine
Functional medicine is a type of integrative medicine that focuses on bringing balance back to all body systems rather than treating each individual symptom separately. It uses functional diagnostic lab testing to discover your hidden root causes. This is exactly what we do here at Holistico as it results in a much more efficient path to clear skin! Â
Test For Your Root Causes
Katie uses functional testing with her 1:1 clients when it can help guide their individual plan. Options include Hair Tissue Mineral Analysis, DUTCH Complete Hormone Test, GI MAP Stool Test, Cellular Micronutrient Assay and more.

DUTCH Complete Hormone Test
This is a comprehensive dried urine hormone test measuring sex and adrenal hormones along with their metabolites.
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This is a comprehensive dried urine hormone test measuring sex and adrenal hormones along with their metabolites. This test is especially useful if you suffer from PMS, period cramps, irregular or heavy periods, infertility and/or jawline acne. The DUTCH test is a great evaluation if you have or suspect PCOS as it not only looks at the aromatase pathway but also gives complete insight into cortisol, cortisone, estradiol, estrone, estriol, progesterone, testosterone, DHEA and DHEA-S. It also looks at DHEA and progesterone metabolites to evaluate how these hormones are being broken down. We are even able to see cortisol and cortisone pattern to analyze circadian rhythm. Most importantly, it tests your estrogen metabolism pathways to see how well you metabolize estrogen through your liver. This is key for estrogen dominant women as it helps us decipher if phase 1 or phase 2 detoxification is slow and in need of repair. Both of these detoxification pathways can cause acne if under-active. In addition, it measures your daily free cortisol pattern, melatonin (6-OHMS), 8-OHdG and the following organic acids:Â
Homovanillate (HVA) – the primary dopamine metaboliteÂ
Vanilmandelate (VMA) – the primary norepinephrine and epinephrine metabolite
Methylmalonate (MMA) – elevated if patients are vitamin B12 deficientÂ
Xanthurenate – elevated if patients are vitamin B6 deficientÂ
Kynurenate – elevated if patients are vitamin B6 deficientÂ
Pyroglutamate – elevated if patients are glutathione deficient
Indican- elevated if patients have gut putrefaction or dysbiosis
b-Hydroxyisovalerate- elevated if patients are biotin deficient
Quinolinate- marker for neuroinflammation

Hair Tissue Mineral Analysis Test
This is a non-invasive hair mineral test that evaluates how your body responds to stress and how resilient you are.
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This is a non-invasive hair mineral test that evaluates how your body responds to stress and how resilient you are. It gives insight into nutritional deficiencies, gut infections, sex hormone balance, blood sugar, adrenal health, thyroid & metabolic health as well as nervous system balance. It also is an assessment for copper and iron overload. With everyone dieting and taking an array of supplements or pharmaceuticals now a days, mineral imbalances have become extremely common. This is unfortunate because minerals are the backbone to our health and the spark plugs of our body. It is impossible to clear acne if you do not have balanced minerals because you will never be able to detoxify properly. The HTMA test is the best bang for your buck as it is relatively affordable and explains the "why" behind acne, hormone and digestive issues. It displays macro and micro minerals, toxic metal levels and how well your body is able to excrete toxic metals. Minerals are essential but you don’t want too many or too little. It's all about the ratios and overall balance in the body. This is a non-invasive hair tissue mineral biopsy that tests levels of the following minerals and toxic metals:Â
Calcium        Nickel
Magnesium    Cobalt
Sodium        Molybdenum
Potassium      LithiumÂ
Iron           Boron
Copper        Lead
Manganese    Mercury
Zinc          Cadmium
Chromium     ArsenicÂ
Selenium      AluminumÂ
Phosphorus

GI Map Gut Health Test
This is the most advanced DNA based stool test that gives complete insight into digestion, your gut microbiome and gastrointestinal function.
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This is the most advanced DNA based stool test that gives complete insight into digestion, your gut microbiome and gastrointestinal function. This is an important test to do if you suffer from acne, eczema, psoriasis and/or chronic digestive issues like bloating/gas, acid reflux, constipation/diarrhea etc. All disease begins in the gut! The GI Map is the only accurate test for microbes and microbial imbalances that cause acne. After all, gut health and acne are highly connected due to the gut skin axis. This test also provides markers for insight into blood sugar, bile flow, adrenal health, gluten sensitivity, inflammation, immunity, pancreatic enzyme sufficiency, liver function, leaky gut, SIBO, occult blood and antibiotic resistant genes. It also checks for the following bacteria, parasites/pathogens, worms, viruses and fungi/yeast:
Enterotoxigenic Escherichia coli
Enteroinvasive Escherichia coli / Shigella
Escherichia coli O157
Enterohemorrhagic Escherichia coli
Clostridioides difficile Toxin A and B
Campylobacter
Chilomastix mesnelli
Geotrichum species
Microsporidia species
Rhodotorula species
Necator americanus
Cyclospora
Cytomegalovirus
Epstein-Barr Virus
Ancylostoma duodenale
Trichuris trichiura
Taenia species
Ascaris lumbricoides
Candida species
Candida albicans
Pentatrichomonas
Entamoeba coli
Firmicutes
Enterobacter species
Lactobacillus
Enterococcus
Shigella
Shiga-like Toxins
Salmonella
Cryptosporidium
Entamoeba histolytica
Giardia
Adenovirus
Norovirus
Rotavirus
Helicobacter pylori with 7 virulence factors
Bacteroides fragilis
Bifidobacterium
Escherichia coli
Clostridium species
Bacteroidetes
Bacillus
Enterococcus
Morganella
Pseudomonas
Staphylococcus
Streptococcus
Citrobacter
Klebsiella
Mycobacterium tuberculosis
Prevotella copri
Proteus species
Blastocystis hominis
Dientamoeba fragilis
Endolimax nana

Cellular Micronutrient Assay
This is a functional blood test that evaluates your micronutrient status inside your actual cells, not just what is floating around in your bloodstream.
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This is a functional blood test that evaluates your micronutrient status inside your actual cells, not just what is floating around in your bloodstream. Standard blood work measures serum levels, which fluctuate day to day and do not show whether your cells can actually use those nutrients. This test measures your white blood cells directly and reflects four to six months of nutritional status, so it catches functional insufficiencies: nutrients you are not absorbing, not activating, or burning through faster than you can replace them. It gives insight into immune function, energy production, detox and antioxidant capacity, gut health, hormone balance, blood sugar, and nervous system health. It is impossible to clear your skin if your cells are missing the raw materials needed to detoxify properly. Instead of guessing with an array of supplements, this test shows you exactly which nutrients your cells are asking for.
Results come back as sufficient, borderline, or insufficient for each of the following 55 nutrients:
Vitamins: Vitamin A, B1, B2, B3, B5 (pantothenic acid), B6, B9 (folate), B12, C, D, K1, K2 (MK4), K2 (MK7), biotin, delta tocotrienol (Vitamin E)
Minerals: Boron, calcium, chromium, copper, iodine, iron, lithium, magnesium, manganese, molybdenum, selenium, strontium, vanadium, zinc
Amino acids: Arginine, asparagine, cysteine, glycine, histidine, isoleucine, leucine, L-glutamine, L-serine, L-tyrosine, lysine, methionine, phenylalanine, taurine, threonine, tryptophan, valine
Antioxidants and other nutrients: Carnitine, choline, coenzyme Q10, glutathione, inositol, lipoic acid, omega 3 DHA, omega 3 EPA, omega 9

Katie likes to do a full medical evaluation on her 1:1 clients before considering any testing. After your first session, she will map out a plan for you and if she sees any uncertainties, she will recommend specific test(s) to provide the answers she needs moving forward. This allows for complete customization to you and removes the potential of any unnecessary testing. Ultimately, testing is always the client’s choice and will only be suggested if necessary. All testing is available at wholesale cost for clients part of the 1:1 Clear Skin Membership.
Additional Testing Available Inside 1:1 Membership:
- Full Thyroid Panel
- Organic Acids Test
- Mycotoxin Testing
- Vitamin D Test
- Sex Hormone Panel
- Vaginal Microbiome Test
- Stress Hormone Panel
- Histamine Test
- Food Sensitivity Testing
- SIBO Breath Test
- Liver Markers
- Insulin & Glucose Markers
- Cholesterol Panel
+ MORE ALL AT WHOLESALE COST
Frequently Asked Questions
Do I need functional tests before joining?
You do not need to order tests before speaking with Katie. She reviews your individual case first and recommends testing when it may help guide your plan. Options include GI MAP, DUTCH, Hair Tissue Mineral Analysis and the Cellular Micronutrient Assay. Discuss which tests fit your plan and confirm ordering arrangements with Katie before purchasing.
Which tests are available through the membership?
The options include GI MAP Stool Test, DUTCH Complete Hormone Test, Hair Tissue Mineral Analysis and the Cellular Micronutrient Assay. Katie discusses which, if any, fit your individual plan. You do not need to buy every test, and availability, collection requirements and laboratory arrangements can vary by location.
Should I order a test before my first session?
Please speak with Katie first if you are considering testing as part of your individual plan. She reviews your history and goals before recommending tests. The Order Inside 1:1 Membership links open the membership page, where you can arrange a call and discuss which tests, collection requirements and laboratory costs fit your plan.
Can clients outside Canada discuss testing?
Holistico works with clients worldwide. Let Katie know where you live when discussing your plan. Laboratory shipping, sample collection and test availability depend on the test and your location, so confirm the practical arrangements and any additional costs with Katie before ordering.
Are testing costs included in the membership?
Membership and laboratory testing are discussed separately. Katie explains which tests she recommends and their current costs before you decide. Ask for the total relevant to your location, including any collection or shipping charges. Do not assume that every test shown here is included in a membership payment.
How does functional nutrition fit alongside medical care?
Functional nutrition support considers food, lifestyle and relevant test results as part of an individual plan. It complements care from your licensed healthcare team. A nutrition consultation or functional test does not replace diagnosis, prescribed treatment or urgent care. Discuss new or persistent symptoms with an appropriate clinician and review any proposed testing or supplements with them.
