LOINCActiveBoth

LOINC Code 73559-7: HSV 1 IgG IF (S) [Titer]

73559-7 is a LOINC code used to identify HSV 1 IgG IF (S) [Titer] 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. It is commonly used with the system or sample type Ser.

Reviewed by HealthAssure Clinical TeamUpdated 25 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. 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
  • Method: IF

What it does not mean

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

Key facts

  • Herpes simplex virus 1 IgG Ab [Titer] in Serum by Immunofluorescence
  • Herpes simplex virus 1 Ab.IgG
  • HSV IgG antibodies in human serum can be detected by indirect fluorescent antibody assays to aid in the diagnosis of a primary infection, reinfection or reactivation of the latent virus. This term is based on, but not limited to, MBL-BION's HSV1-G (Herpes Simplex Virus type 1 IgG) antibody test system.
  • ABS; Aby; ACIF; Antby; Anti; Antibodies; Antibody; Anticomplement Immunofluorescence; Autoantibodies; Autoantibody; Dilution factor; Dilution Factor (Titer); FA; Fluorescent antibody; Fluoresent; Herp splx; Herpes simplex virus type 1; Herpes simplex virus type I; HSV; HSV1; i; ID; IFA; Immune fluorescence; Immune globulin G; Immunoflour; Immunofluor; Immunofluorescence; Immunoglobulin G; Infectious Disease; InfectiousDisease; Microbiology; Point in time; Random; Serum; SmQn; SR; Time Resolved Fluorescence; Titer; Titered; Titre; TRF; Ttr

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 IF (S) [Titer]Herpes simplex virus 1 IgG Ab [Titer] in Serum by ImmunofluorescenceHSV1 IgG Titr Ser IFHerpes simplex virus 1 Ab.IgGMICROHerpes simplex virus 1 (HSV 1) IgG antibody, BloodTitr

Frequently asked questions

Code details

Code73559-7
SystemLOINC
Display nameHSV 1 IgG IF (S) [Titer]
DescriptionHerpes simplex virus 1 Ab.IgG
Short nameHSV1 IgG Titr Ser IF
ComponentHerpes simplex virus 1 Ab.IgG
PropertyTitr
TimingPt
System (specimen)Ser
ScaleSemiQn
MethodIF
ClassMICRO
Example unitstiter
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.44
Last changed2.75

Consumer names

Herpes simplex virus 1 (HSV 1) IgG antibody, Blood

Part names

Herpes simplex virus 1 Ab.IgGTitrPtSerSemiQnIFHerpes simplex virus 1 IgGTiterPoint in time (spot)SerumImmunofluorescence (IF)

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 73559-7 | HealthAssure