Thyroid
10 markers in this category
Free T3 (Triiodothyronine)
Free T3 is considered the most active thyroid hormone and may be important for physical performance, metabolic efficiency, and recovery.
Free T4 (Thyroxine)
Free T4 is the main thyroid hormone and may be essential for physical performance, metabolic efficiency, and training recovery.
Reverse T3
Reverse T3 is an inactive thyroid hormone that may increase during overtraining, underfuelling, or physical stress.
TPO Antibodies
TPO antibodies indicate potential autoimmune thyroid activity. For active individuals, undetected thyroid autoimmunity may subtly affect training capacity, recovery, and metabolic efficiency.
TSH (Thyroid Stimulating Hormone)
Your TSH value tells you how hard your pituitary is pulling on your thyroid, and in anyone who trains hard that number moves with sleep, energy balance and load.
TSH Receptor Antibodies
TRAb antibodies may indicate Graves' disease, which can cause hyperthyroidism. For active individuals, an uncontrolled overactive thyroid can significantly impact heart rate, recovery, and body composition.
TSI (Thyroid Stimulating Immunoglobulin)
TSI antibodies may indicate Graves' disease, which can lead to hyperthyroidism. For active individuals, an overactive thyroid may affect metabolism, heart rate, and recovery.
Thyroglobulin
Thyroglobulin is a thyroid protein that may provide insight into thyroid gland function for active individuals.
Thyroglobulin Antibodies
Thyroglobulin Antibodies are immune markers that may indicate autoimmune thyroid activity. For active individuals, undetected thyroid autoimmunity might subtly affect metabolic efficiency, recovery, and training adaptations over time.
Total T3 (Triiodothyronine)
Total T3 measures triiodothyronine, the most metabolically active thyroid hormone. For active individuals, T3 may influence metabolic rate, energy availability, and recovery capacity.