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HTLV-I/II Antibody, with Reflex to Confirmatory Assay

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About Our HTLV-I/II Antibody, with Reflex to Confirmatory Assay

Note: Fasting is not required for this test.

The HTLV-I/II Antibody test detects antibodies to the Human T-Cell Lymphotropic Virus (HTLV), a retrovirus, and differentiates between the two types of HTLV. The presence of antibodies to HTLV-I or HTLV-II indicates that a person is infected with the Human T-Cell Lymphotropic Virus.

HTLV infects white blood cells, a major part of the immune system. An HTLV infection can cause a many health conditions including Leukemia, Lymphoma, and various nervous system disorders.

According to the CDC, transmission of HTLV-I occurs:

  • From mother to child during childbirth
  • Breastfeeding
  • Sexual contact
  • Blood transfusion
  • Sharing contaminated needles

Our HTLV testing is often ordered to help identify or rule out HTLV as the cause of conditions such as Leukemia, Lymphoma, or nervous system disorders.


Human T-Cell Lymphotropic Virus Type 1 and Type 2 were the first human retroviruses discovered. HTLV Type 1 and Type 2 are distantly related to HIV (Human Immunodeficiency Virus), but HTLV is not HIV, and HTLV does not cause AIDS.


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