Energy

Ferritin
The main storage form of iron in the body. Low levels indicate iron deficiency, while high levels may reflect inflammation or iron overload.

Cortisol
The body’s primary stress hormone that also regulates energy, metabolism, and sleep-wake cycles. Abnormal patterns can signal adrenal dysfunction or chronic stress.

Total Iron Binding Capacity (TIBC)
Measures the blood’s capacity to bind iron. Helps distinguish between different causes of anemia.

Iron Saturation
The percentage of transferrin (iron transport protein) that is carrying iron. Low levels suggest deficiency, while high levels suggest overload.

Iron, Total
Measures the total amount of circulating iron available for red blood cell production and oxygen transport.