What does this LOINC code represent?

This LOINC code identifies a lab observation, measurement, question, or clinical concept in a standardized format.

Is this enough to understand my test result?

No. The code identifies the test or observation, but the interpretation depends on the actual result, reference range, and clinical context.

LOINCActiveObservation

LOINC Code 16343-6: Alpha aminoisobutyrate (CSF) [Mass/Vol]

Name: LOINC Code 16343-6: Alpha aminoisobutyrate (CSF) [Mass/Vol]
Creator: HealthAssure Clinical Team
Published: 2026-05-25T17:13:11.347Z

16343-6 is a LOINC code used to identify Alpha aminoisobutyrate (CSF) [Mass/Vol] in laboratory and clinical observation data. You may see this code in lab systems, lab reports, EHR exports, interoperability feeds, or other structured clinical data exchanges. LOINC codes identify tests, measurements, observations, survey items, and clinical questions in a standardized way. It is associated with the component Alpha aminoisobutyrate. It is commonly used with the system or sample type CSF.

Reviewed by HealthAssure Clinical TeamUpdated 25 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 Alpha aminoisobutyrate. 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: Observation

What it does not mean

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

Key facts

Alpha aminoisobutyrate [Mass/volume] in Cerebral spinal fluid
Alpha aminoisobutyrate
2-aminoisobutyrate; 2-aminoisobutyric acid; 2-methylalanine; A-AIB; AIB; Alfa; alpha aminoisobutyric acid; Cerebral spinal fluid; Cerebrospinal Fl; Chemistry; Level; Mass concentration; Point in time; QNT; Quan; Quant; Quantitative; Random; Spinal Fl; Spinal Fld; Spinal Flu; Spinal Fluid

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.

Related SNOMED CT concepts

705114005SNOMED CT mapping for Alpha aminoisobutyrate (CSF) [Mass/Vol] (16343-6)

Related observations and tests

SNOMED_CT 705114005high

LOINC Code System

Source: LOINC-SNOMED cooperation package

Common synonyms

Alpha aminoisobutyrate (CSF) [Mass/Vol]Alpha aminoisobutyrate [Mass/volume] in Cerebral spinal fluidA-AIB CSF-mCncAlpha aminoisobutyrateCHEMAlpha aminoisobutyrate, Spinal fluidMCnc

Frequently asked questions

Code details

Code16343-6

SystemLOINC

Display nameAlpha aminoisobutyrate (CSF) [Mass/Vol]

DescriptionAlpha aminoisobutyrate

Short nameA-AIB CSF-mCnc

ComponentAlpha aminoisobutyrate

PropertyMCnc

TimingPt

System (specimen)CSF

ScaleQn

ClassCHEM

StatusACTIVE

Order/ObservationObservation

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released1.0l

Last changed2.34

Consumer names

Alpha aminoisobutyrate, Spinal fluid

Part names

Alpha aminoisobutyrateMCncPtCSFQnMass ConcentrationPoint in time (spot)Cerebral spinal fluid

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.