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LOINC Code 6507-8: N. meningitidis w135 Ag LA Ql (CSF)

6507-8 is a LOINC code used to identify N. meningitidis w135 Ag LA 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 Neisseria meningitidis serogroup w135 Ag. It is commonly used with the system or sample type CSF.

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 Neisseria meningitidis serogroup w135 Ag. 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
  • Method: LA

What it does not mean

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

Key facts

  • Neisseria meningitidis serogroup w135 Ag [Presence] in Cerebral spinal fluid by Latex agglutination
  • Neisseria meningitidis serogroup w135 Ag
  • Antigen; Antigens; Cerebral spinal fluid; Cerebrospinal Fl; ID; Infectious Disease; InfectiousDisease; LAT; Latex agglutination; Mening; Meningid; Meningitis; Meningo; Meningococcal meningitis; Meningococcus; Microbiology; N men; N men serogroup; N men sg W135; N men sg w135 Ag; N menigitidis; N meningitidis; Neisseria meningitidis group w135; Neisseria meningitidis type w135; 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

N. meningitidis w135 Ag LA Ql (CSF)Neisseria meningitidis serogroup w135 Ag [Presence] in Cerebral spinal fluid by Latex agglutinationN men sg W135 Ag CSF Ql LANeisseria meningitidis serogroup w135 AgMICRONeisseria meningitidis serogroup w135 antigen, Spinal fluidPrThr

Frequently asked questions

Code details

Code6507-8
SystemLOINC
Display nameN. meningitidis w135 Ag LA Ql (CSF)
DescriptionNeisseria meningitidis serogroup w135 Ag
Short nameN men sg W135 Ag CSF Ql LA
ComponentNeisseria meningitidis serogroup w135 Ag
PropertyPrThr
TimingPt
System (specimen)CSF
ScaleOrd
MethodLA
ClassMICRO
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released1.0g
Last changed2.64

Consumer names

Neisseria meningitidis serogroup w135 antigen, Spinal fluid

Part names

Neisseria meningitidis serogroup w135 AgPrThrPtCSFOrdLAPresence or ThresholdPoint in time (spot)Cerebral spinal fluidLatex agglutination

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 6507-8 | HealthAssure