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 1991-9: Vitamin D2 binding proteins (S) [Mass/Vol]

Name: LOINC Code 1991-9: Vitamin D2 binding proteins (S) [Mass/Vol]
Creator: HealthAssure Clinical Team
Published: 2026-05-25T17:13:11.347Z

1991-9 is a LOINC code used to identify Vitamin D2 binding proteins (S) [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 Calciferol binding proteins. It is commonly used with the system or sample type Ser.

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 Calciferol binding proteins. It is commonly used with the system or sample type Ser.

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

Calciferol binding proteins [Mass/volume] in Serum
Calciferol binding proteins
Activated ergosterol; Bind; C28H43OH; Calciferol BP; Chemistry; Ercalciol; Ergocalciferol; Gc-globulin; Level; Mass concentration; Point in time; Pro vitamin D; Protein; QNT; Quan; Quant; Quantitative; Random; Serum; SR; VDBP; Viosterol; Vit D 1 25 hydroxy; Vit D2; Vitamin D binding protein; Vitamin D2

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 Vitamin D2 binding proteins (S) [Mass/Vol] (1991-9)

Related observations and tests

SNOMED_CT 705114005high

LOINC Code System

Source: LOINC-SNOMED cooperation package

Common synonyms

Vitamin D2 binding proteins (S) [Mass/Vol]Calciferol binding proteins [Mass/volume] in SerumCalciferol BP Ser-mCncCalciferol binding proteinsCHEMVitamin D2 Binding Proteins, BloodMCnc

Frequently asked questions

Code details

Code1991-9

SystemLOINC

Display nameVitamin D2 binding proteins (S) [Mass/Vol]

DescriptionCalciferol binding proteins

Short nameCalciferol BP Ser-mCnc

ComponentCalciferol binding proteins

PropertyMCnc

TimingPt

System (specimen)Ser

ScaleQn

ClassCHEM

StatusACTIVE

Order/ObservationBoth

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released1.0

Last changed2.73

Consumer names

Vitamin D2 Binding Proteins, Blood

Part names

Calciferol binding proteinsMCncPtSerQnMass ConcentrationPoint in time (spot)Serum

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.