Condition Guide

Hypothyroidism Management with Vitalix

What Is Hypothyroidism?

Hypothyroidism occurs when your thyroid gland does not produce enough thyroid hormones (T3 and T4), which control your metabolism, energy, body temperature, and mood. The most common cause is Hashimoto's thyroiditis, an autoimmune condition where the immune system attacks the thyroid. It affects about 5% of Americans, with many more undiagnosed because standard testing only checks TSH.

Key Metrics to Track

TSHOptimal: 0.5-2.0 mIU/L
Lower is better within range; standard range is too wideStandard: 0.4-4.5 mIU/L
Free T4Optimal: 1.1-1.8 ng/dL
Active thyroid hormone precursorStandard: 0.8-1.8 ng/dL
Free T3Optimal: 3.0-4.0 pg/mL
The active thyroid hormone; often not testedStandard: 2.3-4.2 pg/mL
TPO AntibodiesOptimal: < 15 IU/mL
Elevated = Hashimoto's autoimmune attackStandard: < 35 IU/mL
Reverse T3Optimal: < 15 ng/dL
High levels block T3 from workingStandard: 8-25 ng/dL

Recommended Lab Tests

Most doctors only check TSH, which misses subclinical hypothyroidism and conversion issues. Request a complete thyroid panel:

  • Full thyroid panel — TSH, free T4, free T3, reverse T3
  • Thyroid antibodies — TPO and thyroglobulin antibodies (Hashimoto's diagnosis)
  • Iron panel + ferritin — low iron impairs T4-to-T3 conversion
  • Vitamin D — deficiency worsens autoimmune thyroid disease
  • Selenium — essential for thyroid hormone conversion; often low

How Vitalix Helps

Medication Optimization Experiments

Track how timing, brand changes, or adding T3 affects your energy, weight, and lab values with structured experiments.

Endocrinology Specialist Agent

AI reviews your full thyroid panel (not just TSH), flags conversion issues, and suggests evidence-based optimizations.

Thyroid Lab Trends

See TSH, free T3, free T4, and antibody trends over months. Compare medication changes against lab results.

Symptom-Lab Correlation

Track fatigue, weight, temperature, and mood alongside labs to find your personal optimal ranges.

Related Articles

Lab Tests Your Annual Physical Misses→How to Read Your Lab Results→Bringing Data to Your Endocrinologist→

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Vitalix is not a medical device and does not provide medical advice. Always consult your healthcare provider for diagnosis and treatment.