LOINCActiveBoth

LOINC Code 78205-2: ALK rearrangements FISH Ql (Bld/Tiss)

78205-2 is a LOINC code used to identify ALK rearrangements FISH Ql (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 ALK gene rearrangements. 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 ALK gene rearrangements. 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: FISH

What it does not mean

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

Key facts

  • ALK gene rearrangements [Presence] in Blood or Tissue by FISH
  • ALK gene rearrangements
  • This term was created for, but is not limited in use to, the Vysis ALK Break Apart FISH Probe Kit, which is intended to detect rearrangements involving the ALK gene on chromosome region 2p23.
  • ALK rearrange; ALK receptor tyrosine kinase; Anaplastic lymphoma kinase (Ki-1); Blood; Fluorescent in situ hybridization; Genetics; Heredity; Heritable; Inherited; Molecular pathology; MOLPATH; MOLPATH.REARRANGEMENTS; NBLST3; Ordinal; Point in time; PR; QL; Qual; Qualitative; Random; Rearr; Rearrangement; Screen; 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

ALK rearrangements FISH Ql (Bld/Tiss)ALK gene rearrangements [Presence] in Blood or Tissue by FISHALK rearrange Bld/T Ql FISHALK gene rearrangementsMOLPATH.REARRANGEALK rearrangements, Blood or tissue specimenPrThr

Frequently asked questions

Code details

Code78205-2
SystemLOINC
Display nameALK rearrangements FISH Ql (Bld/Tiss)
DescriptionALK gene rearrangements
Short nameALK rearrange Bld/T Ql FISH
ComponentALK gene rearrangements
PropertyPrThr
TimingPt
System (specimen)Bld/Tiss
ScaleOrd
MethodFISH
ClassMOLPATH.REARRANGE
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.54
Last changed2.61

Consumer names

ALK rearrangements, Blood or tissue specimen

Part names

ALK gene rearrangementsPrThrPtBld/TissOrdFISHPresence or ThresholdPoint in time (spot)Blood or TissueFluorescent in situ hybridization (FISH)

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 78205-2 | HealthAssure