Lab testing · Physician-ordered · Denver and online across Colorado

Weight loss lab testing in Denver, read by an obesity medicine doctor

Medically reviewed by Dr. Angela Tran, DO · Updated October 2026

Before a meal plan or a prescription, Dr. Angela Tran, DO, double board-certified in Internal Medicine and Obesity Medicine, checks for insulin resistance, thyroid problems and other barriers that make weight loss harder. Visits are online, for patients in Denver and anywhere in Colorado.

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4.8 on Google · 136 reviewsOr call (720) 823-8075Virtual visits · Colorado residents · Since 2012
Dr. Tran’s white coat embroidered “Med-Fit, PLLC, Angela Tran, D.O.” with a stethoscope, two wrenches and a screwdriver
Photo: Lisa Lilo
The short answer

What labs show that the scale can’t

Weight loss labs check thyroid function, blood sugar and insulin, cholesterol, liver and kidney health, and key nutrients. They find medical reasons weight is hard to lose and show whether a medication like a GLP-1 is safe for you.

“As a medical weight loss expert, I am the body’s mechanic, and I am able to ‘look under the hood’ and have a greater understanding of one’s metabolism.”

What we test

The labs behind your plan

Results guide your nutrition, training and medication, including whether a GLP-1 like semaglutide or tirzepatide is right for you.

Blood sugar and insulin

Fasting glucose, hemoglobin A1c and, when needed, fasting insulin, to look for insulin resistance, prediabetes or diabetes.

Thyroid

A TSH test first, with free T4 and antibodies if it’s off. An underactive thyroid can slow metabolism and add weight.

Cholesterol

A lipid panel: LDL, HDL, triglycerides and total cholesterol, to see your heart risk and track how it improves.

Liver and kidneys

A comprehensive metabolic panel for liver and kidney function, electrolytes and blood sugar, important before and during medication.

Blood count and nutrients

A complete blood count, plus vitamin D, vitamin B12 and iron when your history calls for them. Low levels can cause fatigue.

Hormones, when needed

Female hormone testing when your symptoms or history point to it, for example with irregular cycles or suspected PCOS.

Honest labs

What labs can, and can’t, tell you

More tests aren’t always better

Guidelines recommend checking thyroid function in everyone with obesity, but not routinely testing cortisol or broad hormone panels without a reason. Dr. Tran orders what your history calls for.

Thyroid pills aren’t a weight loss drug

If your thyroid is underactive, it gets treated. If it’s normal, thyroid hormone isn’t used to lose weight; the European Society of Endocrinology recommends against it.

Labs are a starting line

Your history, medications, sleep and stress matter as much as any number. Labs plus that story make the plan.

Sources: European Society of Endocrinology guideline, 2020 · Obesity Medicine Association, 2022 · StatPearls

How it works

Consult, draw, review

01

Consult

Your history, medications and goals by video, so Dr. Tran orders the tests that matter for you.

02

Get your draw

Have your blood drawn after Dr. Tran orders your labs. Med-Fit is virtual, so there’s no office visit; the team explains where to go when you book.

03

Review together

Dr. Tran goes through your results with you and builds them into your nutrition, training and any medication.

04

Recheck

Follow-up labs during your program show what changed, then at least yearly once you reach maintenance.

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Dr. Tran orders and reviews your labs as part of her care. Labs are included in the GLP-1 Plug and Play Protocol and Executive Level, and full labs are an upgrade on GLP-1 & RX Pro. Compare programs.

Outside Colorado? Med-Fit’s lab work and prescribing are for Colorado residents only. You can get GLP-1 medication through our partner site and work with Dr. Tran on non-medical nutrition coaching through Plug and Play.

Patients

Labs that changed the plan

★★★★★

“After a thorough interview about my habits and history and a detailed review of my lab work, this team was able to create a program that worked specifically for me”

Kim V. · Google review
★★★★★

“…from the beginning Dr. Tran helped me get my thyroid levels in control”

Raquel A. · Google review
Read all 136 reviews on Google →

Excerpts from public Google reviews, quoted as written. Individual results vary.

FAQ

Weight loss labs in Denver and Colorado: questions people ask

Where can I get weight loss lab testing in Denver?

Dr. Angela Tran, DO orders weight loss labs online for patients in Denver and anywhere in Colorado after a virtual consult, then reviews the results with you as part of your care. Med-Fit is a virtual practice, so there’s no office draw; the team explains where to get your labs drawn when you book. Book a consult to get your labs ordered, or text us with questions.

What labs should I get if I’m having trouble losing weight?

Most weight evaluations start with thyroid function (TSH), blood sugar (fasting glucose and hemoglobin A1c), a lipid panel, a comprehensive metabolic panel and a complete blood count, according to StatPearls and the Obesity Medicine Association. Fasting insulin, vitamin D, vitamin B12, iron and hormone tests are added when your history points to them. Dr. Tran picks your panel from your history at your consult. Book a consult to start with the right labs.

How much does weight loss blood work cost in Colorado?

It depends on which tests are ordered, the lab that runs them and whether insurance pays part of the bill, so there’s no single price. At Med-Fit, Dr. Tran orders and reviews labs as part of her care: labs are included in the GLP-1 Plug and Play Protocol and Executive Level, and full labs are an upgrade on GLP-1 & RX Pro. Text us to ask what your labs would cost.

Does insurance cover weight loss lab work in Colorado?

Sometimes. Coverage depends on your plan, the tests and the reason they’re ordered, so check with your insurer before your draw. Text us to ask Med-Fit how lab costs and payment work for your program.

What labs should be checked before starting a GLP-1 in Colorado?

The Wegovy and Zepbound labels don’t require one specific blood test, but they warn about risks such as kidney injury from dehydration, and low blood sugar when combined with some diabetes medicines, and your history and labs help spot those risks early. In Colorado, Dr. Tran orders labs and reviews them with you before she prescribes semaglutide or tirzepatide. Book a consult to start with labs.

How often should I monitor labs on a GLP-1?

It depends on your health and medications. Many people get a baseline panel before starting, follow-up labs during treatment to see what changed, and at least yearly labs once they reach maintenance; diabetes or thyroid disease may mean more frequent checks. Dr. Tran sets your lab schedule at your consult. Book a consult to plan yours.

How do I get my hormones checked for weight loss in Denver?

Ask a doctor to order hormone tests when your symptoms or history point to them, for example irregular cycles, suspected PCOS or perimenopause changes. The European Society of Endocrinology advises against broad hormone panels without a reason. Dr. Tran orders female hormone testing as part of her care when it fits your history. Text us to ask about hormone testing.

Can an online doctor in Colorado order labs and prescribe weight loss medication?

Yes, if the doctor is licensed in Colorado and evaluates you first. Dr. Tran is licensed in Colorado: you meet by video, she orders your labs, you have your blood drawn, and she reviews the results with you before prescribing anything. Book a consult online.

Do I need to fast before weight loss blood work?

It depends on the tests. Some blood tests, such as fasting glucose and some cholesterol tests, need fasting, while tests like hemoglobin A1c don’t, according to MedlinePlus. Fasting usually means nothing to eat or drink except water for 8 to 12 hours, and a cholesterol test may need 9 to 12 hours. Follow the instructions that come with your lab order, and text us to ask whether your tests need fasting before your draw.

Start with your labs

Book a consultation and Dr. Tran will order the right panel for you. Lab work is for Colorado residents.

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Programs are provided under the supervision of Dr. Angela Tran, DO. Prescription medication and lab work are available only after a medical evaluation, if appropriate, and only to Colorado residents. Individual results vary. Nothing on this site is medical advice. In an emergency, call 911.

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