Ordering Recommendation

Confirm antibody test results for a positive screening test (HTLV types I and II).

Mnemonic
HTLV WBLOT
Methodology

Qualitative Western Blot

Performed

Varies

Reported

1-8 days

New York DOH Approval Status
This test is New York DOH approved.
Specimen Required
Patient Preparation
Collect

Serum separator tube. Also acceptable: lavender (K2 EDTA), lavender (K3 EDTA), green (sodium heparin), green (lithium heparin), or light blue (sodium citrate).

Specimen Preparation

Separate serum from cells ASAP or within 2 hours of collection. Transfer 1 mL serum to an ARUP Standard Transport Tube. (Min: 0.5 mL).

Storage/Transport Temperature

Frozen.

Unacceptable Conditions

Specimens containing particulate material.

Remarks
Stability

After separation from cells: Ambient: Unacceptable; Refrigerated: 1 week; Frozen: Indefinitely (avoid repeated freeze/thaw cycles)

Reference Interval

Negative

Interpretive Data

This assay should not be used for blood donor screening, associated re-entry protocols, or for screening Human Cell, Tissues and Cellular and Tissue-Based Products (HCT/P).

Compliance Category

Laboratory Developed Test (LDT)

Note

Order this assay only when a specimen is repeatedly reactive for HTLV I or HTLV I/II antibodies.

Hotline History
N/A
CPT Codes

86689

Components
Component Test Code* Component Chart Name LOINC
0020642 HTLV I/II Antibodies, Western Blot 16982-1
* Component test codes cannot be used to order tests. The information provided here is not sufficient for interface builds; for a complete test mix, please click the sidebar link to access the Interface Map.
Aliases
  • HTLV 1, 2 western blot confirmation
  • HTLV 1/2
  • HTLV I/II Antibodies Western Blot
  • HTLV Types 1 & 2 Abs western blot
  • HTLV Types 1 & 2 confirmation
  • HTLV western blot
Human T-Lymphotropic Virus Types I/II Antibodies, Western Blot