Version 2.80

Part Description

LP201653-5   S-beta aminoisobutyrate
Beta aminoisobutyric acid (BAIB) is a nonprotein amino acid that is an end product of pyrimidine metabolism. The R and S enantiomers (previously named D-(minus)-BAIB and L-plus-BAIB) are produced from thymine and L-valine, respectively. Under normal circumstances, urine contains predominantly R-BAIB (from thymine) because it is eliminated by filtration and tubular secretion, while plasma contains about 80% S-BAIB (from valine), which is reabsorbed in the kidneys. In patients with dihydropyrimidine dehydrogenase deficiency, thymine catabolism is decreased, which results in moderately decreased CSF concentration and markedly decreased plasma concentration of BAIB. On the other hand, urine BAIB is elevated despite decreased breakdown of thymine, which indicates that there must be cross-over in the thymine and valine degradation pathways. PMID: 14705962 Deficiency of D-beta-aminoisobutyrate:pyruvate aminotransferase (EC 2.6.1.40) , an enzyme that is involved in the catabolism R-BAIB, also results in elevated urine BAIB and is associated with hyperuricemia. [OMIM: 210100] Source: Regenstrief LOINC , PMID: 14705962

Fully-Specified Name

Component
S-beta aminoisobutyrate
Property
SCnc
Time
Pt
System
CSF
Scale
Qn
Method

Additional Names

Long Common Name
S-beta aminoisobutyrate [Moles/volume] in Cerebral spinal fluid
Short Name
S-B-AIB CSF-sCnc
Display Name
S-beta aminoisobutyrate (CSF) [Moles/Vol]
Consumer Name Alpha Get Info
S-beta aminoisobutyrate, Spinal fluid

Basic Attributes

Class
CHEM
Type
Laboratory
First Released
Version 2.54
Last Updated
Version 2.56 (MIN)
Change Reason
Changed Class from CHEM.ESOTERIC to CHEM and added Esoteric tag for more flexibility
Order vs. Observation
Observation

Member of these Panels

LOINC Long Common Name
79586-4 R- and S-beta aminoisobutyrate and D- and L-serine panel - Cerebral spinal fluid

Language Variants Get Info

Tag Language Translation
el-GR Greek (Greece) S-β-αμινοϊσοβουτυρικό:SCnc:Pt:ΕΝΥ:Qn:
Synonyms: S SCnc S-β-αμινοϊσοβουτυρικό β-αμινοϊσοβουτυρικό
es-ES Spanish (Spain) S-beta aminoisobutirato:Concentración de sustancia:Punto temporal:Líquido Cefalorraquideo:Qn:
Synonyms: Cuantitativo
es-MX Spanish (Mexico) S-beta aminoisobutirato:Concentración de sustancias:Punto temporal:Fluído espinal cerebral:Cuantitativo:
fr-FR French (France) S-bêta aminoisobutyrate:Moles/Volume:Ponctuel:Liquide céphalorachidien:Numérique:
it-IT Italian (Italy) S-Beta aminoisobutirrato:SCnc:Pt:LCS:Qn:
Synonyms: Chimica Concentrazione di Sostanza Liquido cerebrospinale Punto nel tempo (episodio)
nl-NL Dutch (Netherlands) S-bèta-aminoisobutyraat:mol/volume:moment:liquor cerebrospinalis:kwantitatief:
tr-TR Turkish (Turkey) S-beta aminoizobütirat:SubKons:Zmlı:BOS:Kant:
zh-CN Chinese (China) S-beta 氨基异丁酸:物质的量浓度:时间点:脑脊液:定量型:
Synonyms: 3-氨基异丁酸;B-AIB;Beta-氨基异丁酸;β氨基异丁酸;β-氨基异丁酸 B CSF CSF;脊髓液;Cerebral spinal fluid;脑脊髓液 S 型 S-β氨基异丁酸;S-β-氨基异丁酸;S-B-AIB β 克分子浓度;克分子浓度(单位体积);摩尔浓度;摩尔浓度(单位体积);物质的量浓度(单位体积) 化学;化学检验项目;化学检验项目类;化学类;化学试验;非刺激耐受型化学检验项目;非刺激耐受型化学检验项目类;非刺激耐受型化学试验;非刺激耐受型化学试验类 可用数量表示的;定量性;数值型;数量型;连续数值型标尺 时刻;随机;随意;瞬间 脊液 脊髓液 脑脊液（Cerebral spinal fluid，CSF） 脑脊髓液 贝塔

Example Units

Unit Source
umol/L Example UCUM Units

LOINC Terminology Service (API) using HL7® FHIR® Get Info

CodeSystem lookup
https://fhir.loinc.org/CodeSystem/$lookup?system=http://loinc.org&code=79616-9