LOINCActiveBoth

LOINC Code 56415-3: Watermelon IgG4 (S) [Mass/Vol]

56415-3 is a LOINC code used to identify Watermelon IgG4 (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 Citrullus lanatus Ab.IgG4. 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 Citrullus lanatus Ab.IgG4. 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

  • Watermelon IgG4 Ab [Mass/volume] in Serum
  • Citrullus lanatus Ab.IgG4
  • ABS; Aby; Allergen; Allergens; ALLERGY TESTING; Antby; Anti; Antibodies; Antibody; Autoantibodies; Autoantibody; Citrullus vulgaris; f029; f29; f329; Level; Mass concentration; Point in time; QNT; Quan; Quant; Quantitative; Random; Rf329; Serum; SR; Watermelon

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

Watermelon IgG4 (S) [Mass/Vol]Watermelon IgG4 Ab [Mass/volume] in SerumWatermelon IgG4-mCncCitrullus lanatus Ab.IgG4ALLERGYWatermelon IgG4 antibodyMCnc

Frequently asked questions

Code details

Code56415-3
SystemLOINC
Display nameWatermelon IgG4 (S) [Mass/Vol]
DescriptionCitrullus lanatus Ab.IgG4
Short nameWatermelon IgG4-mCnc
ComponentCitrullus lanatus Ab.IgG4
PropertyMCnc
TimingPt
System (specimen)Ser
ScaleQn
ClassALLERGY
Example unitsug/mL
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.29
Last changed2.73

Consumer names

Watermelon IgG4 antibody

Part names

Citrullus lanatus Ab.IgG4MCncPtSerQnWatermelon (Citrullus lanatus) IgG4Mass 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.

LOINC Code 56415-3 | HealthAssure