LOINCActiveObservation

LOINC Code 32831-0: HSV 1 IgG 1st specimen/2nd specimen IA (S) [Ratio]

32831-0 is a LOINC code used to identify HSV 1 IgG 1st specimen/2nd specimen IA (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 Herpes simplex virus 1 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 Herpes simplex virus 1 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
  • Method: IA

What it does not mean

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

Key facts

Herpes simplex virus 1 IgG Ab [Ratio] in Serum by Immunoassay --1st specimen/2nd specimen
Herpes simplex virus 1 Ab.IgG^1st specimen/2nd specimen
12; ABS; Aby; Acute specimen; Antby; Anti; Antibodies; Antibody; Autoantibodies; Autoantibody; Convalescent; EIA; ELFA; ELISA; Enzyme immunoassay; First; Herp splx; Herpes simplex virus type 1; Herpes simplex virus type I; HSV; HSV1; i; IAA; ID; Immune globulin G; Immunoglobulin G; Infectious Disease; InfectiousDisease; MEIA; Microbiology; Point in time; Post immunization; Pre immunization; QNT; Quan; Quant; Quantitative; Random; Ratios; Rto; Second; Serum; sp1; sp2; Spec; SR; SUDS

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

HSV 1 IgG 1st specimen/2nd specimen IA (S) [Ratio]Herpes simplex virus 1 IgG Ab [Ratio] in Serum by Immunoassay --1st specimen/2nd specimenHSV1 IgG 1:2 Ser IA-RtoHerpes simplex virus 1 Ab.IgG^1st specimen/2nd specimenMICROHerpes simplex virus 1 (HSV 1) IgG antibody 1st specimen/2nd specimen, BloodRatio

Frequently asked questions

Code details

Code32831-0
SystemLOINC
Display nameHSV 1 IgG 1st specimen/2nd specimen IA (S) [Ratio]
DescriptionHerpes simplex virus 1 Ab.IgG^1st specimen/2nd specimen
Short nameHSV1 IgG 1:2 Ser IA-Rto
ComponentHerpes simplex virus 1 Ab.IgG^1st specimen/2nd specimen
PropertyRatio
TimingPt
System (specimen)Ser
ScaleQn
MethodIA
ClassMICRO
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.09
Last changed2.73

Consumer names

Herpes simplex virus 1 (HSV 1) IgG antibody 1st specimen/2nd specimen, Blood

Part names

Herpes simplex virus 1 Ab.IgG^1st specimen/2nd specimenRatioPtSerQnIAPoint in time (spot)SerumImmunoassay

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 32831-0 | HealthAssure