Iron Level Test
Below is a plain-language overview of the iron level test. An iron level test measures the amount of iron in your blood. It is often ordered to help evaluate anemia, fatigue, or suspected iron overload. This test is usually part of a group of iron studies, not used alone.
- Sample type
- blood
- Category
- Anemia & Iron
- Turnaround
- 1-3 business days
- Price
- $25
- Referral
- Not required
An iron level test measures the amount of iron in your blood. It is often ordered to help evaluate anemia, fatigue, or suspected iron overload. This test is usually part of a group of iron studies, not used alone.
What it measures
- Serum Iron — The amount of iron circulating in your blood at the time of the test.
- Ferritin — A protein that stores iron; low levels suggest depleted iron stores.
- Transferrin — A protein that carries iron; measured directly or estimated as TIBC.
- Transferrin Saturation — The percentage of transferrin that is carrying iron.
Who it is for
A doctor may order an iron level test if you have symptoms of anemia such as fatigue or pale skin, or if you have a condition that affects iron absorption. It is also used to monitor known iron deficiency or iron overload.
Preparation
Fasting is not usually required for an iron level test, but your doctor may ask you to fast if other tests are done at the same time. Tell your doctor about any iron supplements you take, as they can affect results.
Results and what they mean
Results are reported as numbers for each iron marker, often with a reference range. Your doctor interprets these numbers along with your symptoms and other tests. This is general information only and not medical advice; talk to your clinician about what your results mean.
How to order this test
- Choose the test and place a confidential order online.
- Select a certified collection site and pick a time that suits you.
- Have your specimen collected — most draws take only a few minutes.
- Review results in a secure portal, typically within 1–3 days.
Preparation, hours, and pricing vary by site; confirm details directly with the lab before your visit.
Availability by state
Direct-access online ordering for the iron level test is available in most states. It is currently unavailable in 6 states:
Everywhere else you can order confidentially and collect your sample at a certified site. Browse by state →
Frequently asked questions
Do I need to stop taking iron pills before this test?
Ask your doctor. Iron supplements can raise serum iron levels, so they may want you to pause them for a short time before the test.
What does a low iron level mean?
A low level may suggest iron deficiency, but it can also be caused by other conditions. Your doctor will consider the full picture.
Can I eat before the test?
In most cases, yes. Fasting is not routinely required unless your doctor orders other tests that need it.
How long until I get results?
Results are typically available within 1 to 3 business days.