LOINC Code 74004-3: ABCB1 gene targeted mutation analysis Molgen Nom (Bld/Tiss)

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 ABCB1 gene targeted mutation analysis. 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: Molgen

What it does not mean

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

Key facts

• ABCB1 gene mutations found [Identifier] in Blood or Tissue by Molecular genetics method Nominal
• ABCB1 gene targeted mutation analysis
• ABCB1 (MDR1) gene mutation analysis is performed on patients who present with ineffectiveness or toxicity to certain drugs (protein MDR1 substrates). The patient's genotype is used to predict expression and activity of MDR1 enzymes (that regulate the transport of many drugs) and to determine appropriate treatment and drug dosage.
• ABC20; ATP-binding cassette, sub-family B (MDR/TAP), member 1; Blood; CD243; CLCS; Genetics; GP170; Heredity; Heritable; Identity or presence; Inherited; MDR1; MDR-1; Molecular genetics; Molecular pathology; MOLPATH; MOLPATH.MUTATIONS; multidrug resistance protein 1; Mut; Mut Anl; Mutations; Nominal; PCR; P-GLYCOPROTEIN 1; P-GP; PGY1; Point in time; Random; Tissue; Tissue, unspecified; 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

Frequently asked questions