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.

LOINCActiveOrder

LOINC Code 49590-3: 25-hydroxyvitamin D3 and Vitamin D2 panel

Name: LOINC Code 49590-3: 25-hydroxyvitamin D3 and Vitamin D2 panel
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:33.941Z

49590-3 is a LOINC code used to identify 25-hydroxyvitamin D3 and Vitamin D2 panel 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 Calcidiol & Calciferol panel. It is commonly used with the system or sample type Ser/Plas.

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 Calcidiol & Calciferol panel. 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: Order
Panel type: Panel

What it does not mean

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

Key facts

Calcidiol and Calciferol panel - Serum or Plasma
Calcidiol & Calciferol panel
25(OH)D3; 25-hydroxycholecalciferol; 25-hydroxyvitamin D 3; 25-hydroxyvitamin D metabolites; 25-hydroxyvitamin D2 + D3; 25-hydroxyvitamin D3; Activated ergosterol; C28H43OH; Calciderol; Calcidiol+Calciferol; Calcifediol; Chemistry; Ercalciol; Ergocalciferol; Pan; PANEL.CHEMISTRY; Panl; Pl; Plasma; Plsm; Pnl; Point in time; Pro vitamin D; Random; SerP; SerPl; SerPlas; Serum; Serum or plasma; SR; UniversalLabOrders; Viosterol; Vit D 1 25 hydroxy; Vit D2; Vit D25+D1,25 OH Pnl; Vitamin D 25 hydroxy; 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.

Common synonyms

25-hydroxyvitamin D3 and Vitamin D2 panelCalcidiol and Calciferol panel - Serum or PlasmaVit D25+D1,25 OH Pnl SerPlCalcidiol & Calciferol panelPANEL.CHEM25-hydroxyvitamin D3 and Vitamin D2 panel, Blood-

Frequently asked questions

Code details

Code49590-3

SystemLOINC

Display name25-hydroxyvitamin D3 and Vitamin D2 panel

DescriptionCalcidiol & Calciferol panel

Short nameVit D25+D1,25 OH Pnl SerPl

ComponentCalcidiol & Calciferol panel

Property-

TimingPt

System (specimen)Ser/Plas

Scale-

ClassPANEL.CHEM

StatusACTIVE

Order/ObservationOrder

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.22

Last changed2.73

Consumer names

25-hydroxyvitamin D3 and Vitamin D2 panel, Blood

Part names

Calcidiol & Calciferol panel-PtSer/PlasCalcidiol and Calciferol panelPoint 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.