LOINCActiveBoth

LOINC Code 4482-6: Complement C1r2+C1s2 Qn

4482-6 is a LOINC code used to identify Complement C1r2+C1s2 Qn 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 Complement C1r2+C1s2. It is commonly used with the system or sample type Ser/Plas.

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 Complement C1r2+C1s2. It is commonly used with the system or sample type Ser/Plas.

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

  • Complement C1r2+C1s2 [Units/volume] in Serum or Plasma
  • Complement C1r2+C1s2
  • Arbitrary concentration; Comp; Complmt; HEMATOLOGY/CELL COUNTS; Pl; Plasma; Plsm; Point in time; QNT; Quan; Quant; Quantitative; Random; SerP; SerPl; SerPlas; Serum; Serum or plasma; 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

Complement C1r2+C1s2 QnComplement C1r2+C1s2 [Units/volume] in Serum or PlasmaC1r2+C1s2 SerPl-aCncComplement C1r2+C1s2HEM/BCComplement C1r2+C1s2, BloodACnc

Frequently asked questions

Code details

Code4482-6
SystemLOINC
Display nameComplement C1r2+C1s2 Qn
DescriptionComplement C1r2+C1s2
Short nameC1r2+C1s2 SerPl-aCnc
ComponentComplement C1r2+C1s2
PropertyACnc
TimingPt
System (specimen)Ser/Plas
ScaleQn
ClassHEM/BC
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released1.0
Last changed2.69

Consumer names

Complement C1r2+C1s2, Blood

Part names

Complement C1r2+C1s2ACncPtSer/PlasQnArbitrary ConcentrationPoint in time (spot)Serum or Plasma

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 4482-6 | HealthAssure