Watch the direction, not just one result.
Ferritin is linked to your iron stores. In this example, it rose over three tests.
Cian, 22, plays GAA and wanted to take his training seriously. His first test showed inflammation over four times the normal limit, two weeks after a cold. His body was still fighting something. Instead of pushing harder, he eased off and retested three weeks later.
Shared with permission.
Normal limit: under 5
A single result is a snapshot. Ranges are broad enough to hide a real change — seeing the same marker more than once is what shows whether something's actually shifting.
Ferritin is linked to your iron stores. In this example, it rose over three tests.
Training load, sleep, food or a supplement. Keep the question clean enough to learn from it.
Test. Try. Retest. Twelve weeks is a practical interval to see whether a change actually moved something.
Read a useful signal, then take the right question to your clinician when you need to.