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 96649-9: HLA-DPB1 T-cell epitope match High resolution Nom (Bld/Tiss Donor+Patient)

Name: LOINC Code 96649-9: HLA-DPB1 T-cell epitope match High resolution Nom (Bld/Tiss Donor+Patient)
Creator: HealthAssure Clinical Team
Published: 2026-05-21T09:00:27.591Z

96649-9 is a LOINC code used to identify HLA-DPB1 T-cell epitope match High resolution Nom (Bld/Tiss Donor+Patient) 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 HLA-DPB1 T-cell epitope match. It is commonly used with the system or sample type Bld/Tiss^Donor+Patient.

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 HLA-DPB1 T-cell epitope match. It is commonly used with the system or sample type Bld/Tiss^Donor+Patient.

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
Method: High resolution

What it does not mean

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

Key facts

HLA-DPB1 T-cell epitope match [Type] in Donor+Patient by High resolution

HLA-DPB1 T-cell epitope match

Matching of HLA alleles between unrelated donors and transplant recipients is undertaken to reduce the risk of graft versus host disease to the greatest extent possible. However, it has been shown that HLA-DPB1 matched unrelated donors are often difficult to find. As a result HLA-DPB1 alleles have been placed into groups, so that HLA-DPB1 mismatches between donor and recipient can be classified as "permissive mismatches" (which have a greater chance of success) versus "non-permissive" [PMID22340965].

Blood; Don+Pt; Donr; Genetics; Heredity; Heritable; HLA ANTIGEN; HLA-DPB1 Ept Match; Human Leukocyte Antigen; Inherited; Nominal; Point in time; Random; T cell; T prime; Tissue; Tissue, unspecified; Typ; UCHL-1; WB; Whole blood; Whole blood or Tissue

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

HLA-DPB1 T-cell epitope match High resolution Nom (Bld/Tiss Donor+Patient)HLA-DPB1 T-cell epitope match [Type] in Donor+Patient by High resolutionHLA-DPB1 Ept Match Don+Pt High ResHLA-DPB1 T-cell epitope matchHLAHLA-DPB1 t-cell epitope match, Donor+Patient Blood or tissue specimenType

Frequently asked questions

Code details

Code96649-9

SystemLOINC

Display nameHLA-DPB1 T-cell epitope match High resolution Nom (Bld/Tiss Donor+Patient)

DescriptionHLA-DPB1 T-cell epitope match

Short nameHLA-DPB1 Ept Match Don+Pt High Res

ComponentHLA-DPB1 T-cell epitope match

PropertyType

TimingPt

System (specimen)Bld/Tiss^Donor+Patient

ScaleNom

MethodHigh resolution

ClassHLA

StatusACTIVE

Order/ObservationObservation

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.69

Last changed2.69

Consumer names

HLA-DPB1 t-cell epitope match, Donor+Patient Blood or tissue specimen

Part names

HLA-DPB1 T-cell epitope matchTypePtBld/Tiss^Donor+PatientNomHigh resolutionPoint in time (spot)

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.