HLA Typing and Its Importance in Transplantation HLA Typing (Human Leukocyte Antigen) is a laboratory test that identifies HLA genes, which play a key role in the functioning of the immune system. These genes encode proteins present on the surface of most cells in the body, enabling the immune system to distinguish the body's own cells from foreign cells.
Why is HLA Typing important? HLA Typing is an essential step in organ transplantation and hematopoietic stem cell transplantation (bone marrow transplantation). Compatibility between the donor and recipient significantly reduces the risk of immune complications, such as transplant rejection and graft-versus-host disease (GVHD).
HLA matching is particularly important in:
HLA Genes Most Commonly Analyzed The main HLA loci tested include:
High-resolution typing enables precise identification of HLA alleles and optimal donor selection.
Clinical Applications HLA Typing is widely used for:
How is HLA Typing performed? Sample Collection The test can be performed using:
Turnaround Time HLA Typing test results are usually available within 10 working days from the time the sample is received at the laboratory.
HLA Typing is a genetic test that identifies human leukocyte antigens (HLA). This test is primarily used to assess compatibility between the donor and recipient before organ transplantation.
Your physician may recommend the test for:
No. Fasting is not required for this test, and you may eat normally.
Results are usually available within 10 working days from the receipt of the sample at the laboratory.
An HLA match indicates that the genetic profiles of the donor and recipient are similar. The higher the degree of compatibility, the greater the chances of a successful transplant with fewer complications.
Yes. Depending on the type of transplant and the patient’s clinical condition, transplantation may be performed even without a complete match. The decision is made by the transplant team.
No. The HLA profile is genetically inherited and remains unchanged throughout life.
Generally, no, as HLA Typing is usually performed only once. However, your physician may request additional or confirmatory tests in specific situations.
The results should be interpreted by a specialist physician or the transplant team, taking into account your clinical history and the purpose of the testing.
