LOINC Code 62874-3: Deprecated PhenX measure - assay for human leukocyte antigen (HLA) genotyping

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 PhenX measure - assay for human leukocyte antigen (HLA) genotyping. It is commonly used with the system or sample type ^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: DEPRECATED
• Method: PhenX

What it does not mean

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

Key facts

• Deprecated PhenX measure - assay for human leukocyte antigen (HLA) genotyping
• PhenX measure - assay for human leukocyte antigen (HLA) genotyping
• A bioassay to obtain the specific allelic genotypes of several of the human leukocyte antigens, whose genes reside on chromosome 6p within the Major Histocompatibility Region (MHC). The measure determines the alleles/single nucleotide polymorphisms that are present in the human leukocyte antigen regions of chromosome 6 to assess the major histocompatability system. The genetic variation within the human leukocyte antigen region determines the person's immune response and has been tied to specific autoimmune disorders such as Graves' disease and Hashimoto's thyroiditis, as well as other diseases such as multiple sclerosis, ankylosing spondylitis, and type 1 diabetes. This assay is similar to the genotyping performed in genome wide association studies but captures much more of the genetic variation within the human leukocyte antigen region than would be covered with "tag" single nucleotide polymorphisms.
• Ag; Human Leukocyte Antigen; Leuc; Leuk; Leukocytes; Lkcs; Measure - assay human leuko antg HLA; Pan; Panel; PANEL.PHENX; Panl; Pnl; Point in time; Random; WBC; WBCs; White blood cell; White blood cells

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

Frequently asked questions