LOINC Code 14116-8: IgG synthesis rate Calc (S+CSF) [Mass/Time]

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 IgG synthesis rate. It is commonly used with the system or sample type Ser+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
• Method: Calculated

What it does not mean

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

Key facts

• IgG synthesis rate [Mass/time] in Serum and CSF by calculation
• IgG synthesis rate
• IgG synthesis expresses the synthesis of IgG inside the blood brain barrier, in mg/day, calculated with a formula based on theoretical considerations and on results of clearance studies for a small number of patients. IgG syn = {(IgG.CSF - IgG.serum/369) - (Alb.CSF - Alb.serum/230) x (IgG.serum/Alb.serum) x 0.43} x 0.5.
• Both serum and cerebrospinal fluid; Calc; Calculation; Cerebral spinal fluid; Cerebrospinal Fl; Chemistry; IgG Synth Rate; Immune globulin G; Immunoglobulin G; Mass rate; mRate; Point in time; QNT; Quan; Quant; Quantitative; Random; Serum; Spinal Fl; Spinal Fld; Spinal Flu; Spinal Fluid; SR; Systhesis

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