LOINCActiveObservation

LOINC Code 102765-5: Lobster IgG RAST (S) [Presence]

102765-5 is a LOINC code used to identify Lobster IgG RAST (S) [Presence] 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 Homarus gammarus Ab.IgG. 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 Homarus gammarus Ab.IgG. 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: Observation
  • Method: RAST

What it does not mean

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

Key facts

  • Lobster IgG Ab [Presence] in Serum by Radioallergosorbent test (RAST)
  • Homarus gammarus Ab.IgG
  • ABS; Aby; Allergen; Allergens; ALLERGY TESTING; Antby; Anti; Antibodies; Antibody; Autoantibodies; Autoantibody; f080; f80; Immune globulin G; Immunoglobulin G; Lobster; Point in time; PR; Radioallergosorbent test; Random; Serum; SmQn; SR

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

Lobster IgG RAST (S) [Presence]Lobster IgG Ab [Presence] in Serum by Radioallergosorbent test (RAST)Lobster IgG RASTHomarus gammarus Ab.IgGALLERGYLobster IgG antibodyPrThr

Frequently asked questions

Code details

Code102765-5
SystemLOINC
Display nameLobster IgG RAST (S) [Presence]
DescriptionHomarus gammarus Ab.IgG
Short nameLobster IgG RAST
ComponentHomarus gammarus Ab.IgG
PropertyPrThr
TimingPt
System (specimen)Ser
ScaleSemiQn
MethodRAST
ClassALLERGY
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.75
Last changed2.75

Consumer names

Lobster IgG antibody

Part names

Homarus gammarus Ab.IgGPrThrPtSerSemiQnRASTLobster (Homarus gammarus) IgGPresence or ThresholdPoint in time (spot)SerumRadioallergosorbent test (RAST)

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 102765-5 | HealthAssure