LOINC Code 22591-2: T. pallidum IgG Ql

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 Treponema pallidum Ab.IgG. It is commonly used with the system or sample type Ser/Plas.

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: DEPRECATED

What it does not mean

• The code identifies the observation or test, not the actual result.

Key facts

• Deprecated Treponema pallidum IgG Ab [Presence] in Serum
• Treponema pallidum Ab.IgG
• ABS; Aby; Antby; Anti; Antibodies; Antibody; Arbitrary concentration; Autoantibodies; Autoantibody; ID; Immune globulin G; Immunoglobulin G; Infectious Disease; InfectiousDisease; Microbiology; Ordinal; Pl; Plasma; Plsm; Point in time; QL; Qual; Qualitative; Random; Screen; SerP; SerPl; SerPlas; Serum; Serum or plasma; SR; Syphilis; T palldm; T pallidum; Treponemal

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

Frequently asked questions