Serum Transferrin

Specimen Required

3-5cc Clotted Blood or Serum

Fasting Required

Purpose of the Test

This test is used to evaluate a person’s iron status. Transferrin is a protein that binds to iron in the blood and transports it to the liver and bone marrow, where it is used to make new red blood cells. If a person has low levels of transferrin, it may indicate iron deficiency anemia.

When this test is required

The test is typically requested when a person is suspected of having iron deficiency anemia, especially if the person has symptoms such as fatigue, weakness, shortness of breath, and pale skin. The test may also be requested when a person is undergoing treatment for iron deficiency anemia to monitor their response to treatment.

What the Test Detects

The serum transferrin test measures the level of transferrin, a protein that binds to iron, in the blood. This test is used to evaluate a person’s iron status and to diagnose iron deficiency anemia.

Preparation for the Test

There are no specific test preparations needed for this test. However, it is important to inform the healthcare provider of any medications or supplements that the person is taking, as some medications may affect the test results. Additionally, the person may be advised to fast for a certain amount of time before the test.

Sample Requirements

A blood sample is required for this test. The blood is usually drawn from a vein in the arm.

Additional Notes

In addition to the serum transferrin test, other blood tests may be performed to evaluate a person’s iron status, including tests to measure serum iron levels, total iron-binding capacity (TIBC), and ferritin levels. Depending on the results of these tests, further testing may be needed to determine the cause of iron deficiency anemia. It is also important to note that certain factors such as pregnancy, blood loss, and certain medications can affect iron levels and transferrin levels. Therefore, it is important to inform the healthcare provider of any medications or medical conditions that the person has.

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