LOINCActiveBoth

LOINC Code 14976-5: Lecithin/Sphingomyelin (Amn fld) [Ratio]

14976-5 is a LOINC code used to identify Lecithin/Sphingomyelin (Amn fld) [Ratio] 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 Lecithin/Sphingomyelin. It is commonly used with the system or sample type Amnio fld.

Reviewed by HealthAssure Clinical TeamUpdated 25 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 Lecithin/Sphingomyelin. 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

What it does not mean

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

Key facts

  • Lecithin/Sphingomyelin [Ratio] in Amniotic fluid
  • Lecithin/Sphingomyelin
  • AF; Amn; Amn fl; Amnio; Amniotic flu; Amniotic fluid; c470; Chemistry; Choline phosphoglyceride; Phosphatidylcholine; Point in time; QNT; Quan; Quant; Quantitative; Random; Ratios; Rto; SPH; UniversalLabOrders

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

Lecithin/Sphingomyelin (Amn fld) [Ratio]Lecithin/Sphingomyelin [Ratio] in Amniotic fluidLecithin/Sphingomyelin Amn-RtoLecithin/SphingomyelinCHEMLecithin/Sphingomyelin, Amniotic fluidRatio

Frequently asked questions

Code details

Code14976-5
SystemLOINC
Display nameLecithin/Sphingomyelin (Amn fld) [Ratio]
DescriptionLecithin/Sphingomyelin
Short nameLecithin/Sphingomyelin Amn-Rto
ComponentLecithin/Sphingomyelin
PropertyRatio
TimingPt
System (specimen)Amnio fld
ScaleQn
ClassCHEM
Example unitsratio
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released1.0k
Last changed2.73

Consumer names

Lecithin/Sphingomyelin, Amniotic fluid

Part names

Lecithin/SphingomyelinRatioPtAmnio fldQnPoint 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 14976-5 | HealthAssure