LOINCActiveBoth

LOINC Code 14345-3: Specific gravity Refractometry (Amn fld)

14345-3 is a LOINC code used to identify Specific gravity Refractometry (Amn fld) 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 Observation. 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 Observation. 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: Refractometry

What it does not mean

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

Key facts

  • Specific gravity of Amniotic fluid by Refractometry
  • Observation
  • AF; Amn; Amn fl; Amnio; Amniotic flu; Amniotic fluid; Chemistry; Point in time; QNT; Quan; Quant; Quantitative; Random; Refract; Sp Gr

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

Specific gravity Refractometry (Amn fld)Specific gravity of Amniotic fluid by RefractometrySp Gr Amn RefractometryObservationCHEMSpecific gravity, Amniotic fluidSpGrav

Frequently asked questions

Code details

Code14345-3
SystemLOINC
Display nameSpecific gravity Refractometry (Amn fld)
DescriptionObservation
Short nameSp Gr Amn Refractometry
ComponentObservation
PropertySpGrav
TimingPt
System (specimen)Amnio fld
ScaleQn
MethodRefractometry
ClassCHEM
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released1.0k
Last changed2.79

Consumer names

Specific gravity, Amniotic fluid

Part names

ObservationSpGravPtAmnio fldQnRefractometrySpecific gravityPoint 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 14345-3 | HealthAssure