LOINCActiveBoth

LOINC Code 48668-8: Protein fractions.oligoclonal bands.intrathecal Ql (S+CSF)

48668-8 is a LOINC code used to identify Protein fractions.oligoclonal bands.intrathecal Ql (S+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 Protein fractions.oligoclonal bands.IT. It is commonly used with the system or sample type Ser+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 Protein fractions.oligoclonal bands.IT. It is commonly used with the system or sample type Ser+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

  • Protein fractions.oligoclonal bands.intrathecal [Presence] in Serum and CSF
  • Protein fractions.oligoclonal bands.IT
  • Both serum and cerebrospinal fluid; Cerebral spinal fluid; Cerebrospinal Fl; Chemistry; Frac; Fract; Fraction; Fractionated; Fractionation; M-spikes; Neuro; Neurology; Oligoclonal bands intrathecally produced; Ordinal; Point in time; PR; Prot; QL; Qual; Qualitative; Random; Screen; Serum; Spinal Fl; Spinal Fld; Spinal Flu; Spinal Fluid; SR

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

Protein fractions.oligoclonal bands.intrathecal Ql (S+CSF)Protein fractions.oligoclonal bands.intrathecal [Presence] in Serum and CSFOligoclonal Bands.IT Ser+CSF QlProtein fractions.oligoclonal bands.ITCHEMProtein fractions.oligoclonal bands.intrathecal, Serum+Cerebrospinal fluidPrThr

Frequently asked questions

Code details

Code48668-8
SystemLOINC
Display nameProtein fractions.oligoclonal bands.intrathecal Ql (S+CSF)
DescriptionProtein fractions.oligoclonal bands.IT
Short nameOligoclonal Bands.IT Ser+CSF Ql
ComponentProtein fractions.oligoclonal bands.IT
PropertyPrThr
TimingPt
System (specimen)Ser+CSF
ScaleOrd
ClassCHEM
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.21
Last changed2.73

Consumer names

Protein fractions.oligoclonal bands.intrathecal, Serum+Cerebrospinal fluid

Part names

Protein fractions.oligoclonal bands.ITPrThrPtSer+CSFOrdProtein fractions.oligoclonal bands.intrathecalPresence or ThresholdPoint in time (spot)Serum and CSF

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.