LOINCActiveObservation

LOINC Code 79629-2: R-beta aminoisobutyrate (CSF) [Moles/Vol]

79629-2 is a LOINC code used to identify R-beta aminoisobutyrate (CSF) [Moles/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 R-beta aminoisobutyrate. It is commonly used with the system or sample type CSF.

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 R-beta 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

  • R-beta aminoisobutyrate [Moles/volume] in Cerebral spinal fluid
  • R-beta aminoisobutyrate
  • 3-aminoisobutyrate; 3-aminoisobutyric acid; B; B-AIB; Cerebral spinal fluid; Cerebrospinal Fl; Chemistry; Esoteric; Level; Point in time; QNT; Quan; Quant; Quantitative; R prime; Random; R-B-AIB; Right; Spinal Fl; Spinal Fld; Spinal Flu; Spinal Fluid; Substance concentration

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

R-beta aminoisobutyrate (CSF) [Moles/Vol]R-beta aminoisobutyrate [Moles/volume] in Cerebral spinal fluidR-B-AIB CSF-sCncR-beta aminoisobutyrateCHEMR-beta aminoisobutyrate, Spinal fluidSCnc

Frequently asked questions

Code details

Code79629-2
SystemLOINC
Display nameR-beta aminoisobutyrate (CSF) [Moles/Vol]
DescriptionR-beta aminoisobutyrate
Short nameR-B-AIB CSF-sCnc
ComponentR-beta aminoisobutyrate
PropertySCnc
TimingPt
System (specimen)CSF
ScaleQn
ClassCHEM
Example unitsumol/L
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.54
Last changed2.56

Consumer names

R-beta aminoisobutyrate, Spinal fluid

Part names

R-beta aminoisobutyrateSCncPtCSFQnSubstance 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.