LOINCActiveObservation

LOINC Code 43423-3: Sodium urate (24H U) [Saturation fraction]

43423-3 is a LOINC code used to identify Sodium urate (24H U) [Saturation fraction] 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 Sodium urate. It is commonly used with the system or sample type Urine.

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 Sodium urate. It is commonly used with the system or sample type Urine.

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

What it does not mean

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

Key facts

  • Sodium urate [Saturation Fraction] in 24 hour Urine
  • Sodium urate
  • 1 day; 24 hours; 24HR; Chemistry; Kidney; Monosodium Urate; Na; Na Urate; Na+; NaU; Nephrology; Percent; QNT; Quan; Quant; Quantitative; Relative Supersaturation; Renal; RS; Saturation Fraction; UA; UR; Urates; Uric acid; Urn

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

Sodium urate (24H U) [Saturation fraction]Sodium urate [Saturation Fraction] in 24 hour UrineNa Urate 24h SatFr UrSodium urateCHEMSodium urate, UrineSatFr

Frequently asked questions

Code details

Code43423-3
SystemLOINC
Display nameSodium urate (24H U) [Saturation fraction]
DescriptionSodium urate
Short nameNa Urate 24h SatFr Ur
ComponentSodium urate
PropertySatFr
Timing24H
System (specimen)Urine
ScaleQn
ClassCHEM
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.17
Last changed2.73

Consumer names

Sodium urate, Urine

Part names

Sodium urateSatFr24HUrineQnSaturation Fraction24 hours

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 43423-3 | HealthAssure