LOINCActiveBoth

LOINC Code 14034-3: Rheumatoid factor Qn (CSF)

14034-3 is a LOINC code used to identify Rheumatoid factor Qn (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 Rheumatoid factor. 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 Rheumatoid factor. 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

  • Rheumatoid factor [Units/volume] in Cerebral spinal fluid
  • Rheumatoid factor
  • Arbitrary concentration; Cerebral spinal fluid; Cerebrospinal Fl; Fac; Fact; Point in time; QNT; Quan; Quant; Quantitative; Random; RF; Serology; 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

Rheumatoid factor Qn (CSF)Rheumatoid factor [Units/volume] in Cerebral spinal fluidRheumatoid fact CSF-aCncRheumatoid factorSERORheumatoid factor, Spinal fluidACnc

Frequently asked questions

Code details

Code14034-3
SystemLOINC
Display nameRheumatoid factor Qn (CSF)
DescriptionRheumatoid factor
Short nameRheumatoid fact CSF-aCnc
ComponentRheumatoid factor
PropertyACnc
TimingPt
System (specimen)CSF
ScaleQn
ClassSERO
Example unitsIU/mL
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released1.0k
Last changed2.73

Consumer names

Rheumatoid factor, Spinal fluid

Part names

Rheumatoid factorACncPtCSFQnArbitrary ConcentrationPoint 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 14034-3 | HealthAssure