3X4 offers a turnkey solution to bring the power of genetic testing into your practice so you can provide your patients more personalized and actionable insights that will help them live better, longer, and healthier lives.

Access Medical Labs provides solutions for Hormone Testing, Anti-Aging Testing, Weight Loss Testing and more. They are known for fast turnaround times on testing.

Aerodiagnostics Laboratory performs breath testing for small intestinal bacterial overgrowth and lactose, fructose, and sucrose intolerances. Aerodiagnostics delivers highly accurate results by ensuring each patient specimen is a qualified human lung air specimen by measuring carbon dioxide content. Aerodiagnostics employs proprietary approaches to specimen analysis to ensure your clinical impressions always match your patient's test results.

Alletess specializes in food allergy and food sensitivity testing, offering serum, blood spot and finger-stick options and Wellness Plans to go along with results.

Best known for their hormone and genetic test panels. Offered in blood or saliva. Offer stat turnaround in 24 hours for genetic tests.

BostonHeart does basic bloodwork and cardio-metabolic labs in all-cash pricing, with no order minimum.

Bristle Health analyzes the oral microbiome to provide insights into oral and overall health.

Cell Science Systems offers functional medicine tests, including the ALCAT Test, that aim to provide guidance for the ultimate personalization of diet based on scientific diagnostics. Practitioners can also take advantage of their nutritional consultations for themselves or patients.

CDI's at-home breath test kits for SIBO, IMO, and carbohydrate malabsorption help providers identify and diagnose common sources of digestive distress and functional gastrointestinal ailments.

Cyrex specializes in functional immunology and autoimmunity, and they offer serum antibody testing.

DHA Laboratory is an independent clinical chemistry laboratory specializing in functional and integrative medicine with a focus on mental and emotional conditions.

Diagnostic Solutions Laboratory is best known for their flagship GI-Map stool test, though they also offer several other tests including a genomics test.

Doctor’s Data is best known for their essential and toxic elemental testing, and they also offer an array of other specialty tests.

Gemelli Biotech leverages leading biological discoveries related to the microbiome to provide non-invasive precision diagnostics which enable clinicians to definitively detect scientifically validated biomarkers and optimally treat GI diseases including SIBO, IMO, excess hydrogen sulfide, and post-infectious IBS.

Genova Diagnostics offers a wide array of tests, though their most popular ones are their GI-Effects stool test, NutrEval nutritional test and SIBO breath tests.

iGenex offers testing for lyme disease, relapsing fever, and other tick-borne illnesses.

Immunosciences Lab is a clinical reference and research laboratory in the field of molecular medicine. ISL specializes in utilizing the most highly sensitive and accurate testing methods for detecting lyme disease, autoimmunity, and viral infections.

Infinite Allergy Labs strives to bring you state of the art accurate allergy testing, so you can improve patient care. Their food and environmental antigen panels may uncover the hidden culprits making patients sick, fatigued, inflamed, and overweight. They are your partner in diagnostic food and environmental allergy/sensitivity testing!

KBMO Diagnostics specializes in food inflammation and offers food inflammation tests. They’re also currently offering COVID-19 antibody tests in bloodspot and serum.

Microbiome Labs offers the BiomeFX, which uses advanced and accurate sequencing technology to explore some of the many inner functions of the gut microbiome. This test explores the pathogens in the gut as well as the keystone species that are crucial to overall health and the metabolic functions. Included in the test insights are actionable nutrition, lifestyle, and supplement recommendations that can be used as a road map to improve a patient’s unique microbiome.

Mosaic Diagnostics provides testing for metabolic, genetic, mitochondrial, and environmental factors in chronic illnesses.

Precision Analytical is also known as DUTCH. They specialize in dried urine hormone testing.

Precision Point Diagnostics specializes in Functional Diagnostics with a focus on Allergy, Sensitivity, and Intestinal Permeability testing.

Quest Diagnostics is a leading provider of diagnostic information services, dedicated to empowering individuals and healthcare professionals with insights to make informed health decisions. Through advanced testing, innovative technology, and a nationwide network of laboratories, Quest delivers accurate and timely results to support prevention, diagnosis, and treatment across a wide range of health conditions.

Quicksilver Scientific offers clinical metals testing. They are best known for their Mercury Tri-Test.

RealTime Laboratories is a pioneer in the hidden dangers of mold exposure. Research continues to show that mycotoxins and other toxic mold can cause serious health conditions in certain populations. RealTime Laboratories' medical team and scientific committee are leaders in mold and mycotoxins.

NeuroLab specializes in functional neuroendocrine testing, most notably urinary neurotransmitters and salivary hormones.

SpectraCell is best known for their Intracellular Micronutrient Assay – measures 31 micronutrients and how they affect cellular function and immunity.

Tiny Health is the first gut health test for moms and babies 0-3 years. They help families detect potential gut imbalances and course-correct early on. They also offer microbiome tests for older children and adults, and vaginal microbiome tests for women over 18. Tiny Health's mission is to improve the health outcomes of future generations and prevent risk of chronic conditions like eczema, allergies, and metabolic health issues that are affecting almost 1 in 2 children in the US.

TruDiagnostic offers a test called TruAge which looks at over 900,000 methylation markers. TruAge measures Biological Age in addition to a full suite of aging related metrics. This includes telomere length measurements, intrinsic and extrinsic age calculations, immune cell subset deconvolution, current pace of aging, and more.

US Biotek specializes in food allergy and food sensitivity testing. They’re also currently offering Covid-19 serum antibody testing.

ZRT lab specializes in hormone testing, done in both blood spot and saliva. They also offer an array of other tests in bloodspot, urine and saliva.