LOINCActiveObservation

LOINC Code 25298-1: Rubella virus IgG 1st specimen/2nd specimen (S) [Ratio]

25298-1 is a LOINC code used to identify Rubella virus IgG 1st specimen/2nd specimen (S) [Ratio] 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 Rubella virus Ab.IgG^1st specimen/2nd specimen. 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 Rubella virus Ab.IgG^1st specimen/2nd specimen. 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

What it does not mean

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

Key facts

Rubella virus IgG Ab [Ratio] in Serum --1st specimen/2nd specimen
Rubella virus Ab.IgG^1st specimen/2nd specimen
12; ABS; Aby; Acute specimen; Antby; Anti; Antibodies; Antibody; Autoantibodies; Autoantibody; Congenital rubella syndrome; Convalescent; First; German measles; ID; Immune globulin G; Immunoglobulin G; Infectious Disease; InfectiousDisease; Microbiology; Point in time; Post immunization; Pre immunization; QNT; Quan; Quant; Quantitative; Random; Ratios; Rto; RUBV; Second; Serum; sp1; sp2; Spec; 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

Rubella virus IgG 1st specimen/2nd specimen (S) [Ratio]Rubella virus IgG Ab [Ratio] in Serum --1st specimen/2nd specimenRUBV IgG 1:2 Ser-RtoRubella virus Ab.IgG^1st specimen/2nd specimenMICRORubella virus IgG antibody 1st specimen/2nd specimen, BloodRatio

Frequently asked questions

Code details

Code25298-1
SystemLOINC
Display nameRubella virus IgG 1st specimen/2nd specimen (S) [Ratio]
DescriptionRubella virus Ab.IgG^1st specimen/2nd specimen
Short nameRUBV IgG 1:2 Ser-Rto
ComponentRubella virus Ab.IgG^1st specimen/2nd specimen
PropertyRatio
TimingPt
System (specimen)Ser
ScaleQn
ClassMICRO
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.00
Last changed2.73

Consumer names

Rubella virus IgG antibody 1st specimen/2nd specimen, Blood

Part names

Rubella virus Ab.IgG^1st specimen/2nd specimenRatioPtSerQnPoint 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.