LOINCActiveObservation

LOINC Code 104495-7: Co4 Ab [Titer]

104495-7 is a LOINC code used to identify Co4 Ab [Titer] 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 C little o4 Ab. 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 C little o4 Ab. 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: Observation

What it does not mean

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

Key facts

  • Co4 Ab [Titer] in Serum or Plasma
  • C little o4 Ab
  • ABS; Aby; Antby; Anti; Antibodies; Antibody; Autoantibodies; Autoantibody; BLOOD BANK; Co4; Co4 Ab; Dilution factor; Dilution Factor (Titer); Pl; Plasma; Plsm; Point in time; Random; SerP; SerPl; SerPlas; Serum; Serum or plasma; SmQn; SR; Titer; Titered; Titre; Ttr

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

Co4 Ab [Titer]Co4 Ab [Titer] in Serum or PlasmaCo4 Ab Titr SerPlC little o4 AbBLDBKCo4 antibody, BloodTitr

Frequently asked questions

Code details

Code104495-7
SystemLOINC
Display nameCo4 Ab [Titer]
DescriptionC little o4 Ab
Short nameCo4 Ab Titr SerPl
ComponentC little o4 Ab
PropertyTitr
TimingPt
System (specimen)Ser/Plas
ScaleSemiQn
ClassBLDBK
Example unitstiter
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.78
Last changed2.78

Consumer names

Co4 antibody, Blood

Part names

C little o4 AbTitrPtSer/PlasSemiQnCo4 AbTiterPoint 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 104495-7 | HealthAssure