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 56036-7: Apolipoprotein B/Cholesterol in LDL [Mass ratio]

Name: LOINC Code 56036-7: Apolipoprotein B/Cholesterol in LDL [Mass ratio]
Creator: HealthAssure Clinical Team
Published: 2026-05-25T17:13:11.347Z

56036-7 is a LOINC code used to identify Apolipoprotein B/Cholesterol in LDL [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 Apolipoprotein B/Cholesterol.in LDL. It is commonly used with the system or sample type Ser/Plas.

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 Apolipoprotein B/Cholesterol.in LDL. It is commonly used with the system or sample type Ser/Plas.

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

Apolipoprotein B/Cholesterol in LDL [Mass Ratio] in Serum or Plasma
Apolipoprotein B/Cholesterol.in LDL
APO; Apo B; ApoB; Apolipo; Apolipoprot; Apolipoproteins; Chemistry; Chol; Choles; Cholest; Cholesterol total; Cholesterols; LDLc; LDL-C; Lipid; Low density lipoprotein cholesterol; Low density lipoprotein cholesterols; Mass concentration ratio; Mass ratio; MCRto; Pl; Plasma; Plsm; Point in time; QNT; Quan; Quant; Quantitative; Random; SerP; SerPl; SerPlas; Serum; Serum or plasma; SR

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 Apolipoprotein B/Cholesterol in LDL [Mass ratio] (56036-7)

Related observations and tests

SNOMED_CT 705114005high

LOINC Code System

Source: LOINC-SNOMED cooperation package

Common synonyms

Apolipoprotein B/Cholesterol in LDL [Mass ratio]Apolipoprotein B/Cholesterol in LDL [Mass Ratio] in Serum or PlasmaApo B/LDLc SerPlApolipoprotein B/Cholesterol.in LDLCHEMApolipoprotein B/LDL Cholesterol, BloodMRto

Frequently asked questions

Code details

Code56036-7

SystemLOINC

Display nameApolipoprotein B/Cholesterol in LDL [Mass ratio]

DescriptionApolipoprotein B/Cholesterol.in LDL

Short nameApo B/LDLc SerPl

ComponentApolipoprotein B/Cholesterol.in LDL

PropertyMRto

TimingPt

System (specimen)Ser/Plas

ScaleQn

ClassCHEM

Example unitsRatio

StatusACTIVE

Order/ObservationBoth

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.29

Last changed2.44

Consumer names

Apolipoprotein B/LDL Cholesterol, Blood

Part names

Apolipoprotein B/Cholesterol.in LDLMRtoPtSer/PlasQnMass RatioPoint in time (spot)Serum or Plasma

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.