LOINC Code 49193-6: CEV IgM (CSF) [Titer]

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 California encephalitis virus Ab.IgM. It is commonly used with the system or sample type CSF.

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

• California encephalitis virus IgM Ab [Titer] in Cerebral spinal fluid
• California encephalitis virus Ab.IgM
• ABS; Aby; Antby; Anti; Antibodies; Antibody; Autoantibodies; Autoantibody; CA; Calif; Cerebral spinal fluid; Cerebrospinal Fl; CEV; CEV Ab; CEV IgM; Dilution factor; Dilution Factor (Titer); Enc; Enceph; Encephalomyelitis; ID; Immune globulin M; Immunoglobulin M; Infectious Disease; InfectiousDisease; Microbiology; Neuro; Neurology; Point in time; Random; SmQn; Spinal Fl; Spinal Fld; Spinal Flu; Spinal Fluid; Titer; Titered; Titre; Ttr

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