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 76688-1: Alpha-1-acid glycoprotein/Creatinine (U) [Mass ratio]

Name: LOINC Code 76688-1: Alpha-1-acid glycoprotein/Creatinine (U) [Mass ratio]
Creator: HealthAssure Clinical Team
Published: 2026-05-25T17:13:11.347Z

76688-1 is a LOINC code used to identify Alpha-1-acid glycoprotein/Creatinine (U) [Mass ratio] 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-1-acid glycoprotein/Creatinine. It is commonly used with the system or sample type Urine.

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-1-acid glycoprotein/Creatinine. It is commonly used with the system or sample type Urine.

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

Alpha-1-acid glycoprotein/Creatinine [Mass Ratio] in Urine
Alpha-1-acid glycoprotein/Creatinine
The alpha-1-acid glycoprotein/creatinine ratio is used to monitor the effectiveness of renal dialysis. Determinations are expressed in /mg creatinine to compensate for variations in urine concentration.
A1; A1acid Glycoprotein; AAG; Acd; Acids; AGP; Alfa; Chemistry; CR; Crea; Creat; gG; Glycoprot; Glycoproteins; GP; i; Mass concentration ratio; Mass ratio; MCRto; Orosomucoid; Point in time; QNT; Quan; Quant; Quantitative; Random; UA; UCr; UR; Urn

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-1-acid glycoprotein/Creatinine (U) [Mass ratio] (76688-1)

Related observations and tests

SNOMED_CT 705114005high

LOINC Code System

Source: LOINC-SNOMED cooperation package

Common synonyms

Alpha-1-acid glycoprotein/Creatinine (U) [Mass ratio]Alpha-1-acid glycoprotein/Creatinine [Mass Ratio] in UrineA1acid Glycoprotein/Creat UrAlpha-1-acid glycoprotein/CreatinineCHEMAlpha-1-acid glycoprotein/Creatinine, UrineMRto

Frequently asked questions

Code details

Code76688-1

SystemLOINC

Display nameAlpha-1-acid glycoprotein/Creatinine (U) [Mass ratio]

DescriptionAlpha-1-acid glycoprotein/Creatinine

Short nameA1acid Glycoprotein/Creat Ur

ComponentAlpha-1-acid glycoprotein/Creatinine

PropertyMRto

TimingPt

System (specimen)Urine

ScaleQn

ClassCHEM

Example unitsmg/g creatinine

StatusACTIVE

Order/ObservationBoth

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.52

Last changed2.52

Consumer names

Alpha-1-acid glycoprotein/Creatinine, Urine

Part names

Alpha-1-acid glycoprotein/CreatinineMRtoPtUrineQnMass RatioPoint in time (spot)

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.