LOINCActiveBoth

LOINC Code 81313-9: Cryoglobulin.complement C3 Ql (S)

81313-9 is a LOINC code used to identify Cryoglobulin.complement C3 Ql (S) 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 Cryoglobulin.complement C3. It is commonly used with the system or sample type Ser.

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 Cryoglobulin.complement C3. It is commonly used with the system or sample type Ser.

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

  • Cryoglobulin.complement C3 [Presence] in Serum
  • Cryoglobulin.complement C3
  • Beta 1 C-globulin; Chemistry; Comp; Complmt; Cryo; Cryoglobulin C3; Cryoglobulins; Cryoprecipitate; Ordinal; Point in time; PR; QL; Qual; Qualitative; Random; Screen; Serum; 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

Cryoglobulin.complement C3 Ql (S)Cryoglobulin.complement C3 [Presence] in SerumCryoglobulin C3 Ser QlCryoglobulin.complement C3CHEMCryoglobulin.complement C3, BloodPrThr

Frequently asked questions

Code details

Code81313-9
SystemLOINC
Display nameCryoglobulin.complement C3 Ql (S)
DescriptionCryoglobulin.complement C3
Short nameCryoglobulin C3 Ser Ql
ComponentCryoglobulin.complement C3
PropertyPrThr
TimingPt
System (specimen)Ser
ScaleOrd
ClassCHEM
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

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

Consumer names

Cryoglobulin.complement C3, Blood

Part names

Cryoglobulin.complement C3PrThrPtSerOrdPresence or ThresholdPoint in time (spot)Serum

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 81313-9 | HealthAssure