What does this LOINC code represent?

This LOINC code identifies a lab observation, measurement, question, or clinical concept in a standardized format.

Is this enough to understand my test result?

No. The code identifies the test or observation, but the interpretation depends on the actual result, reference range, and clinical context.

LOINCActiveObservation

LOINC Code 18276-6: Blood group antigens absent Nom (RBC donor)

Name: LOINC Code 18276-6: Blood group antigens absent Nom (RBC donor)
Creator: HealthAssure Clinical Team
Published: 2026-05-21T11:17:27.587Z

18276-6 is a LOINC code used to identify Blood group antigens absent Nom (RBC donor) 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 antigens absent. It is commonly used with the system or sample type RBC^Donor.

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 antigens absent. It is commonly used with the system or sample type RBC^Donor.

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 antigens absent [Identifier] on Red Blood Cells from Donor
Blood group antigens absent
Ag; BLOOD BANK; Donr; Erythrocytes; Identity or presence; Nominal; Point in time; Random; Red blood cells; Red blood corpusles

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 antigens absent Nom (RBC donor)Blood group antigens absent [Identifier] on Red Blood Cells from DonorAntigens Absent RBC DonrBlood group antigens absentBLDBKBlood group Antigens Absent, Donor Red blood cellsPrid

Frequently asked questions

Code details

Code18276-6

SystemLOINC

Display nameBlood group antigens absent Nom (RBC donor)

DescriptionBlood group antigens absent

Short nameAntigens Absent RBC Donr

ComponentBlood group antigens absent

PropertyPrid

TimingPt

System (specimen)RBC^Donor

ScaleNom

ClassBLDBK

StatusACTIVE

Order/ObservationObservation

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released1.0l

Last changed2.24

Consumer names

Blood group Antigens Absent, Donor Red blood cells

Part names

Blood group antigens absentPridPtRBC^DonorNomPresence or IdentityPoint in time (spot)Red Blood Cells^Donor

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.