LOINCActiveBoth

LOINC Code 59018-2: HLA-DPA1 High resolution Nom (Bld/Tiss)

59018-2 is a LOINC code used to identify HLA-DPA1 High resolution Nom (Bld/Tiss) 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-DPA1. It is commonly used with the system or sample type Bld/Tiss.

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-DPA1. It is commonly used with the system or sample type Bld/Tiss.

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: Both
  • Method: High resolution

What it does not mean

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

Key facts

  • HLA-DPA1 [Type] by High resolution
  • HLA-DPA1
  • Blood; Genetics; Heredity; Heritable; HLA ANTIGEN; Human Leukocyte Antigen; Inherited; Nominal; Point in time; Random; Tissue; Tissue, unspecified; Typ; 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-DPA1 High resolution Nom (Bld/Tiss)HLA-DPA1 [Type] by High resolutionHLA-DPA1 High ResHLA-DPA1HLAHLA-DPA1, Blood or tissue specimenType

Frequently asked questions

Code details

Code59018-2
SystemLOINC
Display nameHLA-DPA1 High resolution Nom (Bld/Tiss)
DescriptionHLA-DPA1
Short nameHLA-DPA1 High Res
ComponentHLA-DPA1
PropertyType
TimingPt
System (specimen)Bld/Tiss
ScaleNom
MethodHigh resolution
ClassHLA
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.32
Last changed2.73

Consumer names

HLA-DPA1, Blood or tissue specimen

Part names

HLA-DPA1TypePtBld/TissNomHigh resolutionPoint in time (spot)Blood or Tissue

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 59018-2 | HealthAssure