LOINCActiveBoth
LOINC Code 31431-0: HTLV I+II IgG Ql (S)
Reviewed by HealthAssure Clinical TeamUpdated 21 May 2026
What is this code?
LOINC codes identify tests, measurements, observations, survey items, and clinical questions in a standardized way. It is associated with the component HTLV I+II Ab.IgG. It is commonly used with the system or sample type Ser.
When is it used?
- Used in lab systems, EHRs, and clinical data exchange.
- May identify a test, observation, survey item, or clinical document request rather than a diagnosis.
- Status: ACTIVE
- Order vs observation: Both
What it does not mean
- The code identifies the observation or test, not the actual result.
Key facts
- HTLV I+II IgG Ab [Presence] in Serum
- HTLV I+II Ab.IgG
- 2; ABS; Aby; Antby; Anti; Antibodies; Antibody; Autoantibodies; Autoantibody; HTLV type 1+2; HTLV type I+II; Human T-cell Leukemia Virus; Human T-cell Lymphotrophic Virus; ID; Immune globulin G; Immunoglobulin G; Infectious Disease; InfectiousDisease; Microbiology; Ordinal; Point in time; PR; QL; Qual; Qualitative; Random; Screen; Serum; SR
Where you may see this code
You may see this code in lab systems, lab reports, EHR exports, interoperability feeds, or other structured clinical data exchanges.
Common synonyms
HTLV I+II IgG Ql (S)HTLV I+II IgG Ab [Presence] in SerumHTLV I+II IgG Ser QlHTLV I+II Ab.IgGMICROHTLV I+II IgG antibody, BloodPrThr
Frequently asked questions
About this content
This page is prepared by HealthAssure's clinical team using official coding standards from LOINC. AI tools assist with drafting explanations, which are then reviewed and verified by healthcare professionals for accuracy. This content is for informational purposes and does not replace professional medical advice. Meet our team.