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Functional Medicine tests

Advanced and functional markers people use to look deeper: inflammation, ApoB, Lp(a), insulin resistance, iron stores, omega-3s, cortisol and more.

More tests in this category

Full comparisons for these are coming soon. In the meantime you can browse each provider's catalog directly.

Comparison coming soonHeart HealthFunctional Medicine

hs-CRP (High-Sensitivity C-Reactive Protein)

A sensitive marker of general inflammation, often looked at alongside cholesterol.

Browse providers:Quest Labcorp OnDemand Ulta Lab Tests
Comparison coming soonHeart HealthFunctional Medicine

Homocysteine

An amino acid linked to B-vitamin status and studied as a heart-health marker.

Browse providers:Quest Labcorp OnDemand Ulta Lab Tests
Comparison coming soonHeart HealthFunctional Medicine

Apolipoprotein B (ApoB)

Counts atherogenic cholesterol-carrying particles; a more detailed look than LDL alone.

Browse providers:Quest Labcorp OnDemand Ulta Lab Tests
Comparison coming soonHeart HealthFunctional Medicine

Lipoprotein(a) [Lp(a)]

A largely inherited cholesterol particle; many people only need to check it once.

Browse providers:Quest Labcorp OnDemand Ulta Lab Tests
Comparison coming soonDiabetes & MetabolicFunctional Medicine

Fasting Insulin & HOMA-IR

Fasting insulin, often paired with glucose to estimate insulin resistance (HOMA-IR).

Browse providers:Quest Labcorp OnDemand Ulta Lab Tests
Comparison coming soonVitamins & NutritionFunctional Medicine

Ferritin & Iron Panel

Iron stores (ferritin) plus iron and iron-binding capacity.

Browse providers:Quest Labcorp OnDemand Ulta Lab Tests
Comparison coming soonVitamins & NutritionFunctional Medicine

Omega-3 Index / Fatty Acids

Omega-3 and omega-6 fatty acid levels in the blood.

Browse providers:Quest Labcorp OnDemand Ulta Lab Tests
Comparison coming soonHormonesFunctional Medicine

Cortisol (AM)

The body's main stress hormone, usually measured in the morning.

Browse providers:Quest Labcorp OnDemand Ulta Lab Tests
Comparison coming soonThyroidFunctional Medicine

Thyroid Antibodies (TPO)

Antibodies against the thyroid, used in evaluating autoimmune thyroid conditions.

Browse providers:Quest Labcorp OnDemand Ulta Lab Tests
Comparison coming soonGeneral Health & WellnessFunctional Medicine

Comprehensive Wellness & Functional Panels

Bundled panels that combine CBC, CMP, lipids, thyroid, vitamins and advanced markers in one order.

Browse providers:Quest Labcorp OnDemand Ulta Lab Tests
Availability varies by state. Direct-to-consumer lab testing is not offered everywhere. For example, Quest's consumer site has not offered testing in Arizona, Hawaii or Puerto Rico, and New York, New Jersey and Rhode Island have had restrictions on ordering tests without a clinician. Rules and provider coverage change, so confirm availability for your state at checkout.

LaboratoryTests.com is for information only and is not medical advice. Talk with a licensed clinician about which tests are right for you and what your results mean. Medical disclaimer.