LOINCActiveObservation

LOINC Code 34157-8: little e Ab [Titer]

34157-8 is a LOINC code used to identify little e 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 little e Ab. It is commonly used with the system or sample type Ser/Plas.

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 little e 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

  • little e Ab [Titer] in Serum or Plasma
  • little e Ab
  • ABS; Aby; Antby; Anti; Antibodies; Antibody; Autoantibodies; Autoantibody; BLOOD BANK; Dilution factor; Dilution Factor (Titer); e; Pl; Plasma; Plsm; Point in time; Random; Rh Blood Group System; 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

little e Ab [Titer]little e Ab [Titer] in Serum or Plasmalittle e Ab Titr SerPllittle e AbBLDBKlittle e antibody, BloodTitr

Frequently asked questions

Code details

Code34157-8
SystemLOINC
Display namelittle e Ab [Titer]
Descriptionlittle e Ab
Short namelittle e Ab Titr SerPl
Componentlittle e 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 released2.10
Last changed2.75

Consumer names

little e antibody, Blood

Part names

little e AbTitrPtSer/PlasSemiQnTiterPoint 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 34157-8 | HealthAssure