LOINCActiveBoth

LOINC Code 41150-4: HSV 1+2 IgM Ql (CSF)

41150-4 is a LOINC code used to identify HSV 1+2 IgM Ql (CSF) 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+2 Ab.IgM. It is commonly used with the system or sample type CSF.

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+2 Ab.IgM. It is commonly used with the system or sample type CSF.

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

  • Herpes simplex virus 1+2 IgM Ab [Presence] in Cerebral spinal fluid
  • Herpes simplex virus 1+2 Ab.IgM
  • ABS; Aby; Antby; Anti; Antibodies; Antibody; Autoantibodies; Autoantibody; Cerebral spinal fluid; Cerebrospinal Fl; Herp splx; Herpes simplex virus type 1; Herpes simplex virus type 1+2; Herpes simplex virus type I+II; HSV; HSV 1+2; HSV1; HSV1+2; i; ID; II; Immune globulin M; Immunoglobulin M; Infectious Disease; InfectiousDisease; Microbiology; Neuro; Neurology; Ordinal; Point in time; PR; QL; Qual; Qualitative; Random; Screen; Spinal Fl; Spinal Fld; Spinal Flu; Spinal Fluid

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+2 IgM Ql (CSF)Herpes simplex virus 1+2 IgM Ab [Presence] in Cerebral spinal fluidHSV1+2 IgM CSF QlHerpes simplex virus 1+2 Ab.IgMMICROHerpes simplex virus (HSV) 1+2 IgM antibody, Spinal fluidPrThr

Frequently asked questions

Code details

Code41150-4
SystemLOINC
Display nameHSV 1+2 IgM Ql (CSF)
DescriptionHerpes simplex virus 1+2 Ab.IgM
Short nameHSV1+2 IgM CSF Ql
ComponentHerpes simplex virus 1+2 Ab.IgM
PropertyPrThr
TimingPt
System (specimen)CSF
ScaleOrd
ClassMICRO
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.15
Last changed2.56

Consumer names

Herpes simplex virus (HSV) 1+2 IgM antibody, Spinal fluid

Part names

Herpes simplex virus 1+2 Ab.IgMPrThrPtCSFOrdHerpes simplex virus 1+2 IgMPresence or ThresholdPoint in time (spot)Cerebral spinal fluid

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 41150-4 | HealthAssure