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.

LOINCActiveBoth

LOINC Code 73913-6: Glycine in CSF/Glycine in plasma (P+CSF) [Relative moles/Vol]

Name: LOINC Code 73913-6: Glycine in CSF/Glycine in plasma (P+CSF) [Relative moles/Vol]
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:53.972Z

73913-6 is a LOINC code used to identify Glycine in CSF/Glycine in plasma (P+CSF) [Relative 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 Glycine CSF/Glycine plas. It is commonly used with the system or sample type Plas+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 Glycine CSF/Glycine plas. It is commonly used with the system or sample type Plas+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

What it does not mean

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

Key facts

Glycine in CSF/Glycine in plasma

Glycine CSF/Glycine plas

Relative substance concentration of glycine in CSF-to-plasma is measured for the diagnosis of glycine encephalopathy.

Cerebral spinal fluid; Cerebrospinal Fl; Chemistry; Gly; Glycine CSFPl; Glycine encephalopathy; NKH; non-ketotic hyperglycinemia; Pl; Plasma; Plsm; Point in time; QNT; Quan; Quant; Quantitative; Random; RlSCnc; 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.

Common synonyms

Glycine in CSF/Glycine in plasma (P+CSF) [Relative moles/Vol]Glycine in CSF/Glycine in plasmaGlycine CSF/Glycine plasCHEMGlycine in CSF/Glycine in Plasma, Blood+Spinal fluidRelSCncPt

Frequently asked questions

Code details

Code73913-6

SystemLOINC

Display nameGlycine in CSF/Glycine in plasma (P+CSF) [Relative moles/Vol]

DescriptionGlycine CSF/Glycine plas

Short nameGlycine CSF/Glycine plas

ComponentGlycine CSF/Glycine plas

PropertyRelSCnc

TimingPt

System (specimen)Plas+CSF

ScaleQn

ClassCHEM

Example unitsratio

StatusACTIVE

Order/ObservationBoth

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.44

Last changed2.73

Consumer names

Glycine in CSF/Glycine in Plasma, Blood+Spinal fluid

Part names

Glycine CSF/Glycine plasRelSCncPtPlas+CSFQnRelative Substance ConcentrationPoint in time (spot)Plasma and CSF

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.