LOINCActiveBoth

LOINC Code 34742-7: Chr breakage Diepoxybutane Qn (Bld)

34742-7 is a LOINC code used to identify Chr breakage Diepoxybutane Qn (Bld) 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 Chromosome breakage. It is commonly used with the system or sample type Bld.

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 Chromosome breakage. It is commonly used with the system or sample type Bld.

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: Diepoxybutane

What it does not mean

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

Key facts

  • Chromosome breakage [Units/volume] in Blood by Diepoxybutane
  • Chromosome breakage
  • Arbitrary concentration; Blood; Chrom Break; Chromosom; Chromosomes; DEB; Molecular pathology; MOLPATH; Point in time; QNT; Quan; Quant; Quantitative; Random; WB; Whole blood

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

Chr breakage Diepoxybutane Qn (Bld)Chromosome breakage [Units/volume] in Blood by DiepoxybutaneChrom Break Bld DEB-aCncChromosome breakageMOLPATHChromosome breakage, BloodACnc

Frequently asked questions

Code details

Code34742-7
SystemLOINC
Display nameChr breakage Diepoxybutane Qn (Bld)
DescriptionChromosome breakage
Short nameChrom Break Bld DEB-aCnc
ComponentChromosome breakage
PropertyACnc
TimingPt
System (specimen)Bld
ScaleQn
MethodDiepoxybutane
ClassMOLPATH
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.11
Last changed2.73

Consumer names

Chromosome breakage, Blood

Part names

Chromosome breakageACncPtBldQnDiepoxybutaneArbitrary ConcentrationPoint in time (spot)Blood

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 34742-7 | HealthAssure