LOINCActiveBoth

LOINC Code 14335-4: Optical density Spectrophotometry (Amn fld) [OD]

14335-4 is a LOINC code used to identify Optical density Spectrophotometry (Amn fld) [OD] 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 Optical density. It is commonly used with the system or sample type Amnio fld.

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 Optical density. It is commonly used with the system or sample type Amnio fld.

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: Spectrophotometry

What it does not mean

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

Key facts

  • Optical density of Amniotic fluid by Spectrophotometry
  • Optical density
  • AF; Amn; Amn fl; Amnio; Amniotic flu; Amniotic fluid; Amniotic fluid bilitubin; Chemistry; Delta OD; Den; Liley scan; OD; OD 450; OD450; Optical density; Point in time; QNT; Quan; Quant; Quantitative; Random

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

Optical density Spectrophotometry (Amn fld) [OD]Optical density of Amniotic fluid by SpectrophotometryOD Amn SpectOptical densityCHEMOptical density, Amniotic fluidOD

Frequently asked questions

Code details

Code14335-4
SystemLOINC
Display nameOptical density Spectrophotometry (Amn fld) [OD]
DescriptionOptical density
Short nameOD Amn Spect
ComponentOptical density
PropertyOD
TimingPt
System (specimen)Amnio fld
ScaleQn
MethodSpectrophotometry
ClassCHEM
Example unitsLiley unit; OD units
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released1.0k
Last changed2.70

Consumer names

Optical density, Amniotic fluid

Part names

Optical densityODPtAmnio fldQnSpectrophotometryPoint in time (spot)Amniotic fluid

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 14335-4 | HealthAssure