LOINCObservation

LOINC Code 13385-0: Beta aminoisobutyrate (Amn fld) [Mass/Vol]

13385-0 is a LOINC code used to identify Beta aminoisobutyrate (Amn fld) [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 Beta aminoisobutyrate. It is commonly used with the system or sample type Amnio fld.

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 Beta aminoisobutyrate. It is commonly used with the system or sample type Amnio fld.

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: DISCOURAGED
  • Order vs observation: Observation

What it does not mean

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

Key facts

  • Beta aminoisobutyrate [Mass/volume] in Amniotic fluid
  • Beta aminoisobutyrate
  • 3-aminoisobutyrate; 3-aminoisobutyric acid; AF; Amn; Amn fl; Amnio; Amniotic flu; Amniotic fluid; B; B-AIB; Chemistry; Level; Mass concentration; Point in time; QNT; Quan; Quant; Quantitative; Random

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

Beta aminoisobutyrate (Amn fld) [Mass/Vol]Beta aminoisobutyrate [Mass/volume] in Amniotic fluidB-AIB Amn-mCncBeta aminoisobutyrateCHEMBeta aminoisobutyrate, Amniotic fluidMCnc

Frequently asked questions

Code details

Code13385-0
SystemLOINC
Display nameBeta aminoisobutyrate (Amn fld) [Mass/Vol]
DescriptionBeta aminoisobutyrate
Short nameB-AIB Amn-mCnc
ComponentBeta aminoisobutyrate
PropertyMCnc
TimingPt
System (specimen)Amnio fld
ScaleQn
ClassCHEM
StatusDISCOURAGED
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released1.0j-a
Last changed2.44

Consumer names

Beta aminoisobutyrate, Amniotic fluid

Part names

Beta aminoisobutyrateMCncPtAmnio fldQnMass ConcentrationPoint in time (spot)Amniotic 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.

LOINC Code 13385-0 | HealthAssure