LOINCActiveObservation

LOINC Code 66874-9: FMR1 gene activation Molgen (Bld)

66874-9 is a LOINC code used to identify FMR1 gene activation Molgen (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 FMR1 gene activation. 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 FMR1 gene activation. 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: Observation
  • Method: Molgen

What it does not mean

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

Key facts

  • FMR1 gene activation in Blood by Molecular genetics method
  • FMR1 gene activation
  • Activation ratio = normal unmethylated/(normal unmethylated+normal methylated) band intensities
  • Blood; FMR1 activation; FMRP; Fragile X; Fragile X mental retardation 1; Fragile X syndrome; FRAXA; Genetics; Heredity; Heritable; Inherited; Molecular genetics; Molecular pathology; MOLPATH; MOLPATH.MUTATIONS; Number Fraction; PCR; Percent; POF; POF1; 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

FMR1 gene activation Molgen (Bld)FMR1 gene activation in Blood by Molecular genetics methodFMR1 activation NFr BldFMR1 gene activationMOLPATH.MUTFMR1 gene activation, BloodNFr

Frequently asked questions

Code details

Code66874-9
SystemLOINC
Display nameFMR1 gene activation Molgen (Bld)
DescriptionFMR1 gene activation
Short nameFMR1 activation NFr Bld
ComponentFMR1 gene activation
PropertyNFr
TimingPt
System (specimen)Bld
ScaleQn
MethodMolgen
ClassMOLPATH.MUT
Example units%
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.38
Last changed2.70

Consumer names

FMR1 gene activation, Blood

Part names

FMR1 gene activationNFrPtBldQnMolgenNumber FractionPoint in time (spot)BloodMolecular genetics

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 66874-9 | HealthAssure