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Comprehensive fatigue panel
Lab test

Comprehensive fatigue panel

Persistent tiredness with no single clear cause calls for checking several possibilities at once rather than one at a time. This panel checks nutrient levels, thyroid function, infection markers, and other blood health indicators together.

Reviewed by a licensed clinician, with follow-up if anything's out of range

Fasting is required

Biotin supplements can affect this result — hold off taking them for 2 to 3 days before your test

Most insurance accepted

Board-certified clinicians

No hidden fees

Available nationwide

What is a Comprehensive Fatigue Panel?

A Comprehensive Fatigue Panel is a broad blood and urine test designed to systematically identify the most common medical causes of persistent tiredness. It combines 76 biomarkers across multiple body systems — from thyroid and adrenal function to inflammation, autoimmune markers, and viral infections — to find what standard panels often miss.

Hormonal, metabolic, and blood health

Evaluates thyroid function (TSH, Free T4), morning cortisol, iron stores, CBC, and HbA1c to identify anemia, thyroid dysfunction, adrenal issues, and blood sugar problems that commonly drive fatigue.

Inflammation, autoimmune, and viral causes

Measures CRP, ESR, ANA, EBV antibodies, and screens for celiac disease and HIV — addressing immune and inflammatory contributors that are frequently overlooked in routine fatigue workups.

Nutritional status and organ function

Assesses Vitamin B12, folate, Vitamin D, and a comprehensive metabolic panel covering kidney, liver, and electrolyte function to catch deficiencies and organ-related causes of low energy.

Complete insights in days

1

Book your test

Instantly schedule at 2,000+ labs nationwide, at a time that works for you. Most visits take 15 minutes or less, with both walk-ins and appointments available.

2

Get clinician-reviewed results

Your results are delivered quickly—and reviewed by medical professionals. You’ll get clear explanations, robust health insights, and recommended next steps tailored to your health needs.

3

Take action with physician guidance

Choose to review your results and manage your plan with a General Medicine physician—or simply use the insights on your own.

4

Track progress over time

Repeat annually to see trends, improvements, and new emerging risks or book individual tests that focus on your set goals

All your care in one place. That’s the General Medicine difference.

We help you understand your options, connect you to the right clinicians, manage prescriptions, coordinate any needed evaluations, and keep an eye on your overall health along the way. It’s comprehensive care that looks at the full picture — your goals, your history, your lifestyle — and makes it simple to move forward with confidence.

Your care plan
Clinician

What's included

Test type

Blood and Urine samples

Collection method

Venipuncture and Urine collection

Fasting

Required

Results processing time

1 to 5 days

Creatine Kinase (CK), Total

Measures an enzyme found mainly in muscles, the heart, and the brain. Elevated levels may point to muscle damage or inflammation that could contribute to fatigue.

Includes: CK Total

Tissue Transglutaminase (tTG) Antibody (IgA)

Detects antibodies associated with celiac disease. Undiagnosed celiac disease can cause chronic fatigue, nutrient malabsorption, and digestive symptoms.

Includes: tTG IgA

HIV-1/2 Antigen and Antibodies, Fourth Generation

Screens for HIV infection using a fourth-generation test that detects both antigens and antibodies. Undiagnosed HIV can present with persistent fatigue and other systemic symptoms.

Includes: HIV Ag/Ab with Reflexes

Vitamin B12 (Cobalamin)

Measures the level of vitamin B12 in your blood. Low B12 can lead to anemia, nerve problems, and significant fatigue.

Includes: Vitamin B12

TSH with Reflex to Free T4

Evaluates thyroid function by measuring thyroid-stimulating hormone. If TSH is abnormal, Free T4 is automatically added. Thyroid imbalances are a common cause of fatigue.

Includes: TSH; Free T4 if TSH is abnormal

Hemoglobin A1c with eAG

Reflects your average blood sugar over the past two to three months. Uncontrolled blood sugar—whether high or low—can cause ongoing tiredness.

Includes: HbA1c, Estimated Average Glucose

Iron, TIBC & Ferritin Panel

Measures iron levels, your body's iron-carrying capacity, and stored iron. Iron deficiency is one of the most common and treatable causes of fatigue.

Includes: Serum Iron, TIBC, Ferritin

Sed Rate (ESR)

A general marker of inflammation in the body. An elevated sed rate may suggest an underlying inflammatory or autoimmune condition contributing to fatigue.

Includes: Erythrocyte Sedimentation Rate

Gliadin (Deamidated) Antibody (IgG)

Detects antibodies related to gluten sensitivity and celiac disease. Used alongside tTG IgA to improve screening accuracy for celiac-related fatigue.

Includes: DGP IgG

Comprehensive Metabolic Panel (CMP)

Provides a broad snapshot of your metabolism, including kidney function, liver function, blood sugar, and electrolyte balance. Abnormalities in any of these areas can contribute to fatigue.

Includes: Glucose, BUN, Creatinine, Electrolytes, Liver Enzymes, Calcium, Protein, and more

CBC with Differential and Platelets

Evaluates the major components of your blood. It can reveal anemia, infection, or other blood-related conditions that commonly cause tiredness.

Includes: White Blood Cells, Red Blood Cells, Hemoglobin, Hematocrit, Platelets, Differential

Mono Screen (Heterophile Antibody)

Screens for infectious mononucleosis (mono), a viral illness known for causing extreme fatigue that can last weeks or months.

Includes: Heterophile Antibody

C-Reactive Protein (CRP)

Measures a protein produced by the liver in response to inflammation. Elevated CRP may indicate infection, autoimmune disease, or other inflammatory conditions linked to fatigue.

Includes: CRP

Vitamin D, 25-Hydroxy, Total

Measures your overall vitamin D level. Low vitamin D is widespread and has been associated with fatigue, muscle weakness, and mood changes.

Includes: Total Vitamin D

Folate, Serum

Measures the level of folate (vitamin B9) in your blood. Low folate can cause a type of anemia that leads to fatigue, weakness, and difficulty concentrating.

Includes: Serum Folate

ANA Screen (IFA) with Reflex to Titer and Pattern

Screens for antinuclear antibodies that may indicate an autoimmune condition such as lupus. Autoimmune disorders are a significant but sometimes overlooked cause of chronic fatigue.

Includes: ANA IFA; Titer and Pattern if positive

Cortisol, A.M.

Measures your cortisol level in the morning when it is normally at its peak. Abnormal cortisol levels can affect energy, stress response, and overall well-being.

Includes: Morning Cortisol

Virtual visit with clinician

Ongoing support, always available.

You’ll be supported by experienced clinicians who care for a wide range of health needs, from everyday concerns to more complex conditions.

Our clinicians track your progress over time and adjust your care as needed. If medication is prescribed, we’ll manage dosing and monitor for side effects. If lab testing is recommended, we review results and refine your plan accordingly. You’re never left to navigate care on your own.

What our customers have to say

Hear from people who felt heard, understood, and supported on General Medicine.

“I found the ease of setting the appointment and how quickly I was able to be seen to be amazing. The physician was very friendly and amazingly helpful.”

Natalie, Texas

“The chat visit was super convenient. The doctor was friendly and took the time needed to answer any questions I had. The prescription I needed was called in and ready the same afternoon.”

Dustin, Tennessee

“I loved my General Medicine experience. It gave me peace of mind to know someone cared and I felt they listened to what I was saying.”

Ann, Florida

“General Medicine is easily the most approachable, efficient, high-quality, and responsive care team I've had the pleasure of working with.”

John, Utah

“General Medicine helped me get the imaging and blood work I needed, referred me to the right specialists, and even helped me find a new family doctor.”

Bridget, Mississippi

Order your lab today.

Frequently asked questions

What conditions can this panel detect?

The panel screens for the most common medical causes of persistent tiredness — including anemia, iron deficiency, thyroid dysfunction, prediabetes and diabetes, vitamin D deficiency, and liver or kidney issues. It measures 76 biomarkers across multiple body systems in a single blood draw.

Do I need to fast before this test?

Yes — fasting for 8–12 hours before your blood draw is recommended for the most accurate results, particularly for the blood sugar and metabolic markers included in the panel. Water is fine. Schedule your appointment for the morning if possible.

What if my results come back normal but I still feel exhausted?

Normal results are still valuable — they help rule out common correctable causes. A clinician can review your results alongside your symptoms and health history to determine whether further evaluation, specialist referral, or a different approach is warranted.

Is this test appropriate for both men and women?

Yes — the panel is designed for both. It includes hormones relevant to each, including testosterone, thyroid hormones, cortisol, and DHEA-S, alongside universal markers like iron stores, blood counts, and metabolic function.

How soon will I have results?

Results are typically available within 2–4 business days. A General Medicine clinician will review your results and can recommend next steps or book a same-day visit if further evaluation is needed.