LOINCActiveBoth

LOINC Code 48266-1: Cocksfoot+Meadow Fescue+Velvet grass+Perennial rye grass+Timothy+Kentucky blue grass triggered leukotriene release (WBC) [Mass/Vol]

48266-1 is a LOINC code used to identify Cocksfoot+Meadow Fescue+Velvet grass+Perennial rye grass+Timothy+Kentucky blue grass triggered leukotriene release (WBC) [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 (Dactylis glomerata+Festuca elatior+Holcus lanatus+Lolium perenne+Phleum pratense+Poa pratensis) leukotriene release. It is commonly used with the system or sample type WBC.

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 (Dactylis glomerata+Festuca elatior+Holcus lanatus+Lolium perenne+Phleum pratense+Poa pratensis) leukotriene release. It is commonly used with the system or sample type WBC.

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

  • Grass Allergen Mix E (Cocksfoot+Meadow Fescue+Velvet grass+Perennial rye grass+Timothy+Kentucky blue grass ) triggered leukotriene release [Mass/volume] by Leukocytes
  • (Dactylis glomerata+Festuca elatior+Holcus lanatus+Lolium perenne+Phleum pratense+Poa pratensis) leukotriene release
  • Allergen; Allergens; ALLERGY TESTING; CAST; Cocksfoot; Festuca elator; Festuca pratensis; g003; g004; g005; g006; g008; g013; g13; g3; g4; g5; g6; g8; Grass Allerg Mix; Italian Ryegrass; June blue grass; June grass; June Kentucky blue grass; Junegrass; Kent blue grass; Kentucky blue grass; Kentucky bluegrass; Leukocytes; Level; LR; Mass Concentration; Meadow fescue; Meadow grass; Orchard grass; Per rye grass; Perennial ryegrass; Phleum pretense; Poa pratensis leukotriene release; Point in time; QNT; Quan; Quant; Quantitative; Random; Rye grass; Ryegrass; Timothy; Timothy grass; Velvet grass; WBCs; White blood cells; Yorkshire fog

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

Cocksfoot+Meadow Fescue+Velvet grass+Perennial rye grass+Timothy+Kentucky blue grass triggered leukotriene release (WBC) [Mass/Vol]Grass Allergen Mix E (Cocksfoot+Meadow Fescue+Velvet grass+Perennial rye grass+Timothy+Kentucky blue grass ) triggered leukotriene release [Mass/volume] by LeukocytesGrass Allerg Mix LR-mCnc(Dactylis glomerata+Festuca elatior+Holcus lanatus+Lolium perenne+Phleum pratense+Poa pratensis) leukotriene releaseALLERGYGrass mix (Cocksfoot, Meadow Fescue, Velvet Grass, Perennial Rye Grass, Timothy, Kentucky Blue Grass) triggered leukotriene release, White blood cellsMCnc

Frequently asked questions

Code details

Code48266-1
SystemLOINC
Display nameCocksfoot+Meadow Fescue+Velvet grass+Perennial rye grass+Timothy+Kentucky blue grass triggered leukotriene release (WBC) [Mass/Vol]
Description(Dactylis glomerata+Festuca elatior+Holcus lanatus+Lolium perenne+Phleum pratense+Poa pratensis) leukotriene release
Short nameGrass Allerg Mix LR-mCnc
Component(Dactylis glomerata+Festuca elatior+Holcus lanatus+Lolium perenne+Phleum pratense+Poa pratensis) leukotriene release
PropertyMCnc
TimingPt
System (specimen)WBC
ScaleQn
ClassALLERGY
Example unitspg/mL sLT
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.21
Last changed2.70

Consumer names

Grass mix (Cocksfoot, Meadow Fescue, Velvet Grass, Perennial Rye Grass, Timothy, Kentucky Blue Grass) triggered leukotriene release, White blood cells

Part names

(Dactylis glomerata+Festuca elatior+Holcus lanatus+Lolium perenne+Phleum pratense+Poa pratensis) leukotriene releaseMCncPtWBCQnMass ConcentrationPoint in time (spot)White blood cells

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.