Ferritin
Measures ferritin, the protein that stores iron β the single best indicator of your total body iron. Low ferritin is the earliest sign of iron deficiency. Results usually in 1β2 business days.
Ferritin reflects how much iron your body has in reserve. It drops before other iron markers change, making it the earliest and most sensitive test for iron deficiency β a common cause of fatigue, hair loss and low energy.
Included Tests
What This Panel Measures
Who Should Get This Panel
- You feel tired, weak or run-down
- You have hair loss, restless legs or shortness of breath
- You menstruate heavily or follow a plant-based diet
- You've been told you're anemic and want to find the cause
Conditions Screened
Related Symptoms
When to Get Tested
Test when you have symptoms of iron deficiency such as fatigue, hair loss or restless legs, or when following up on a low blood count. Ferritin can be elevated by inflammation, so context matters.
Understanding Your Results
Results post to your secure online account usually in 1β2 business days. Low ferritin strongly indicates iron deficiency, often before anemia appears. Because ferritin rises with inflammation, a normal or high value alongside symptoms may need a fuller iron panel to interpret.
Frequently Asked Questions
Why check ferritin instead of iron?
Do I need to fast?
Is this billed to insurance?
Pairs Well With β Same Blood Draw
Test centers donβt accept payment β you pay securely here; the lab just does the draw.
What happens after you order?
- 1Your lab order form & test code appear in your secure online account β with your test centerβs address.
- 2We send your lab requisition to the test center electronically.
- 3Walk in & get tested β tests usually take 5 minutes or less.