LOINCActive

LOINC Code 57108-3: Macular grid.center point thickness by OCT

57108-3 is a LOINC code used to identify Macular grid.center point thickness by OCT 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 Macular grid.center point thickness. It is commonly used with the system or sample type Eye.

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 Macular grid.center point thickness. It is commonly used with the system or sample type Eye.

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
  • Method: OCT

What it does not mean

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

Key facts

  • Macular grid.center point thickness by OCT
  • Macular grid.center point thickness
  • ILM-RPE (internal limiting membrane - retinal pigment epithelium) measurement at the anatomic center of the macula, see ETDRS
  • Eye; EYE.OCT; Eyeball; Length; Macular grid.CP thickness; Occular; Oculis; Ophthalmologic; Ophthalmology; Ophtho; Ophthy; Optic globe; Optical Coherence Tomography; Point in time; QNT; Quan; Quant; Quantitative; Random; Thick; Vision; Visual

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

Macular grid.center point thickness by OCTMacular grid.CP thickness OCTMacular grid.center point thicknessEYE.OCTLenPtEye

Frequently asked questions

Code details

Code57108-3
SystemLOINC
Display nameMacular grid.center point thickness by OCT
DescriptionMacular grid.center point thickness
Short nameMacular grid.CP thickness OCT
ComponentMacular grid.center point thickness
PropertyLen
TimingPt
System (specimen)Eye
ScaleQn
MethodOCT
ClassEYE.OCT
Example unitsum
StatusACTIVE

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.29
Last changed2.70

Part names

Macular grid.center point thicknessLenPtEyeQnOCTLengthPoint in time (spot)by OCT

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 57108-3 | HealthAssure