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Special instruction: This test may exhibit interference when sample is collected from a person who is consuming a supplement with a high dose of biotin (also termed as vitamin B7 or B8, vitamin H, or coenzyme R). It is recommended to stop biotin consumption at least 72 hours prior to the collection of a sample.

Values obtained with different assay methods should not be used interchangeably in serial testing This test is for one-time use only.

Preparation instructions: Fasting prior to blood draw recommended

Description: A test that measures levels of ferritin, an iron transporting protein typically used as levels correlate with total body storage iron e.g. for hemochromatosis or iron deficiency anemia.

Turnaround time: Expected turnaround is within one day, although this may vary depending on other tests ordered for the same blood draw, and expected variation with testing.