Hormonal
Biomarker

Free/Total T4

Available as add-on
Why we test it
Thyroxine is the primary thyroid hormone. The brain converts T4 to T3 locally for neural function. Abnormal T4 levels can impair concentration, memory, and mental clarity.
BetterBrain target
Free T4: 1.0-1.5 ng/dL
The brain converts T4 to T3 locally for neural function. Abnormal levels impair concentration and memory.
What you Can do
  1. Thyroid-supportive nutrition
  2. Selenium
  3. Iodine
  4. Avoid goitrogens (if hypothyroid)
  5. Stress management

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