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 49020-1: Respiratory allergen panel, US - Coastal California (S)

Name: LOINC Code 49020-1: Respiratory allergen panel, US - Coastal California (S)
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:33.170Z

49020-1 is a LOINC code used to identify Respiratory allergen panel, US - Coastal California (S) 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 Respiratory allergen panel, US - Coastal California. It is commonly used with the system or sample type Ser.

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 Respiratory allergen panel, US - Coastal California. 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: Order
Panel type: Panel

What it does not mean

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

Key facts

Respiratory allergen panel, US - Coastal California - Serum
Respiratory allergen panel, US - Coastal California
Allergen; Allergens; ALLERGY TESTING; Alrgen; CA; Calif; Costal CA; Pan; PANEL.ALLERGY; Panl; Pnl; Point in time; Random; Resp allergen Coastal CA Pnl; Resp allergen Pnl; Serum; SR; UniversalLabOrders; Zone 19

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

Respiratory allergen panel, US - Coastal California (S)Respiratory allergen panel, US - Coastal California - SerumResp allergen Coastal CA Pnl SerRespiratory allergen panel, US - Coastal CaliforniaPANEL.ALLERGY-Pt

Frequently asked questions

Code details

Code49020-1

SystemLOINC

Display nameRespiratory allergen panel, US - Coastal California (S)

DescriptionRespiratory allergen panel, US - Coastal California

Short nameResp allergen Coastal CA Pnl Ser

ComponentRespiratory allergen panel, US - Coastal California

Property-

TimingPt

System (specimen)Ser

Scale-

ClassPANEL.ALLERGY

StatusACTIVE

Order/ObservationOrder

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.21

Last changed2.69

Consumer names

Respiratory Allergen Panel, US - Coastal California

Part names

Respiratory allergen panel, US - Coastal California-PtSerPoint 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.