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Transferrin is the main protein in the blood that binds to iron and transports it throughout the body. Transferrin levels rise with iron deficiency and fall in cases of iron overload. Transferrin is also responsible for circadian variation in serum iron (which peaks in the AM).
Normally, iron is absorbed from food and transported throughout the body by transferrin, which is produced by the liver. About 70% of the iron is transported to the bone marrow and incorporated into hemoglobin within red blood cells. The remainder is stored in the tissues as ferritin.
An 8 to 12 hour fast is required for this blood test. However, drink plenty of water and take your medications as prescribed.
The laboratory services are for informational purposes only. It is not the intention of National Diagnostics, Inc and Life Extension to provide specific medical advice but rather to provide users with information to better understand their health. Specific medical advice including diagnosis and treatment will not be provided. Always seek the advice of a trained health professional for medical advice, diagnosis or treatment.
Both the physician and the testing laboratory are independent contractors with whom National Diagnostics, Inc makes arrangements for your blood tests. Neither National Diagnostics, Inc or Life Extension will be liable for any acts or omissions of the physician, the testing laboratory, or their agents or employees.