LOINCActiveObservation

LOINC Code 50401-9: Blood group antibody titered Nom

50401-9 is a LOINC code used to identify Blood group antibody titered Nom 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 Blood group antibody titered. 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 Blood group antibody titered. 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

  • Blood group antibody titered [Identifier] in Serum or Plasma
  • Blood group antibody titered
  • Ab; Bld gp Ab Scn; Bld gp Ab titered; BLOOD BANK; Identity or presence; Nominal; Pl; Plasma; Plsm; Point in time; 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

Blood group antibody titered NomBlood group antibody titered [Identifier] in Serum or PlasmaBld gp Ab titered SerPlBlood group antibody titeredBLDBKBlood group antibody titered, BloodPrid

Frequently asked questions

Code details

Code50401-9
SystemLOINC
Display nameBlood group antibody titered Nom
DescriptionBlood group antibody titered
Short nameBld gp Ab titered SerPl
ComponentBlood group antibody titered
PropertyPrid
TimingPt
System (specimen)Ser/Plas
ScaleNom
ClassBLDBK
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.22
Last changed2.73

Consumer names

Blood group antibody titered, Blood

Part names

Blood group antibody titeredPridPtSer/PlasNomPresence or IdentityPoint 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 50401-9 | HealthAssure