Anxiety and Depression Lab Panel
Comprehensive panel testing thyroid function, stress hormones, vitamins, and inflammatory markers that may contribute to anxiety and depression symptoms.
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LevelPanel has no business or affiliate relationship with Quest or LabCorp. These links are provided as a public service.
Lab testing services linked from this site are not available to residents of Alaska, Arizona, or Hawaii, unless otherwise noted on the lab's own website.
This publication is not intended to solicit the purchase of laboratory testing from any individual consumer.
What this test measures
This panel screens for medical conditions that can mimic, trigger, or amplify symptoms of anxiety and depression. Rather than diagnosing a psychiatric condition directly, it identifies physiological imbalances that are known to affect mood, energy, and cognitive function. The tests evaluate thyroid activity, iron stores, blood cell health, vitamin B12 and D levels, blood sugar regulation, and inflammatory markers.
The connections between these biomarkers and mood are well established. Thyroid dysfunction can produce anxiety, fatigue, and depressive symptoms that overlap almost entirely with primary mood disorders. Iron deficiency and anemia reduce oxygen delivery to the brain, contributing to brain fog and low energy. Deficiencies in vitamins B12 and D are independently associated with increased risk of depressive symptoms. Blood sugar instability adds another layer: rapid glucose drops trigger the release of cortisol and adrenaline, which can feel indistinguishable from an anxiety episode, while chronically elevated glucose may blunt dopamine signaling and promote vascular inflammation. By testing these systems together, the panel helps determine whether a treatable medical cause is contributing to mood symptoms.
What's included
Who should consider this test
You might consider this test if you are experiencing any of the following:
- Individuals experiencing persistent feelings of anxiety, worry, sadness, or depression who want to rule out underlying medical causes that may be contributing to their symptoms.
- Those who have mood symptoms alongside physical complaints such as fatigue, changes in appetite or weight, sleep disturbances, or difficulty concentrating that could indicate thyroid dysfunction or nutrient deficiencies.
- Patients with a family history of thyroid disorders, autoimmune conditions, or diabetes who are experiencing new-onset anxiety or depression symptoms that could be related to these underlying conditions.
- Individuals whose anxiety or depression symptoms have not improved with standard treatments, or who have developed new mood symptoms after starting medications or experiencing significant life stressors.
- Those who want a comprehensive evaluation of their physical health as part of addressing mental health concerns, particularly if they prefer to explore potential medical contributors before or alongside psychological interventions.
What to expect
Preparation
Fast for 8-12 hours before your blood draw, with water permitted. Schedule your appointment in the morning (ideally between 7-9 AM) for optimal cortisol measurement. Avoid vigorous exercise and alcohol consumption for 24 hours before testing.
Sample Type
A healthcare professional will draw blood from a vein in your arm using a standard needle and collection tubes. The process typically takes 5-10 minutes.
Collection
Check in at the laboratory location and present your test order. A phlebotomist will verify your identity, explain the procedure, and collect the blood sample in a private room.
Turnaround
Results are typically available within 2-4 business days and will be delivered securely through your online portal with clear reference ranges and explanations.
Understanding your results
Each biomarker in the panel is reported with its own reference range. It is important to understand that this panel does not diagnose anxiety or depression; those are clinical diagnoses made by healthcare providers based on symptoms, history, and standardized assessments. The value of this blood work lies in identifying correctable medical factors, such as a sluggish thyroid or depleted vitamin stores, that may be worsening or imitating mood symptoms. Patterns across multiple results over time tend to be more informative than any single report.
| Population | Reference Range | Notes |
|---|---|---|
| Adults | TSH: 0.4-4.5 mIU/L | Higher values may indicate hypothyroidism |
| Adults | Cortisol (AM): 6-23 mcg/dL | Values vary by time of day |
| Adults | Vitamin B12: 200-900 pg/mL | Lower values may indicate deficiency |
| Adults | Vitamin D: 30-100 ng/mL | Values below 30 ng/mL suggest insufficiency |
| Adults | CRP: <3.0 mg/L | Higher values indicate inflammation |
Reference ranges may vary by laboratory and individual factors. Results should be interpreted by a healthcare provider in the context of your overall health.
What does a “Low” result mean?
Hypothyroidism, characterized by elevated TSH and low free T4 levels, slows down virtually every metabolic process in your body, leading to profound fatigue, weight gain, and cognitive sluggishness. Vitamin D and B12 deficiencies are frequent among depressed people, and blood tests can reveal these deficiencies which may lead to confusion with other medical issues. Low cortisol may suggest adrenal insufficiency, which can contribute to fatigue and mood symptoms.
What does a “High” result mean?
TSH below 0.1 mIU/L can create symptoms that feel like panic, while hyperthyroidism can cause fatigue through sustained metabolic overdrive that eventually leads to exhaustion and burnout. Chronic stress can increase inflammatory indicators like CRP, and even if illnesses such as diabetes or heart disease do not exist, test results may indicate them. Elevated cortisol may indicate chronic stress or other adrenal dysfunction that can worsen anxiety symptoms.
Privacy & confidentiality
Your test results are confidential and protected under HIPAA regulations. Results are not sent to your personal doctor unless you specifically request it, will not be added to your insurance medical records, and do not appear on insurance explanation of benefits statements.
Frequently asked questions
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Last reviewed: April 2026
CPT Code: 84443, 82533, 82607, 82306, 85025, 86140, 80053
This test may not be available in: NY, NJ, RI
This page is for informational purposes only and does not constitute medical advice. Always consult with a healthcare provider regarding any health concerns. LevelPanel does not diagnose, treat, or prescribe.
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LevelPanel has no business or affiliate relationship with Quest or LabCorp. These links are provided as a public service.
Lab testing services linked from this site are not available to residents of Alaska, Arizona, or Hawaii, unless otherwise noted on the lab's own website.
This publication is not intended to solicit the purchase of laboratory testing from any individual consumer.
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