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Term Description

Supersaturation of urine correlates with stone type. Measurement of supersaturated urine can be used for the diagnosis and management of patients with renal lithiasis, in patients who have a radiopaque stone, or when stone analysis is not possible. The supersaturation can be used to predict the likely composition. Urine supersaturation changes can also be used to monitor the effectiveness of therapy by confirming that the crystallization potential is been decreased. The differential Gibbs free energy is a measure of the thermodynamic pressure for crystals to form. For this term, a software program, EQUIL PMID: 3840540 was used to calculate the urinary supersaturation for the common kidney stone components expressed as the Gibbs free energy of transfer from a supersaturated to a saturated solution. The delta G (DG) will equal zero for solutions at saturation, will be greater than zero for super-saturated solutions, and less than zero for under-saturated solutions. Positive values above the reference mean are associated with increased risk for that type of crystal formation.

Part Description

LP208508-4   Hydroxyapatite
Hydroxylapatite, also called hydroxyapatite (HA), is a naturally occurring mineral form of calcium apatite with the formula Ca5(PO4)3(OH). HA crystal deposition disease (HADD) is a systemic disease of unknown etiology associated with para-articular and or intra-articular deposition of HA crystals. HADD is clinically manifested by localized pain, swelling, and tenderness about the affected joint along with variable limitation of joint motion. When intra-articular, HA crystals can cause joint destruction. Any joint can be involved; the shoulder is most commonly affected, resulting in "Milwaukee shoulder." Treatment includes analgesics, local heat, needling with or without aspiration of the calcific deposits, steroid injections, and possibly surgery for relief of pain. PMID: 14593560 Source: Regenstrief LOINC, PMID: 14593560

LOINC Names Get Info

Fully-Specified Name
Hydroxyapatite:EngDiff:24H:Urine:Qn:
Long Common Name
Hydroxyapatite [Energy Difference] in 24 hour Urine
Short Name
Hydroxyapatite 24h EngDiff Ur
Display Name
Hydroxyapatite (24H U) [Energy diff]
Consumer Name Alpha Get Info
Hydroxyapatite, Urine

Part Model Get Info

  • Component
    Hydroxyapatite
    LP208508-4
    • Analyte
      Hydroxyapatite
      LP208508-4
      • Component Numerator
        Hydroxyapatite
        LP208508-4
        • Component Numerator Core
          Hydroxyapatite
          LP208508-4
        • Component Numerator Core Suffix
          NULL
           
      • Component Denominator
        NULL
         
        • Component Denominator Core
          NULL
           
        • Component Denominator Core Suffix
          NULL
           
    • Challenge
      NULL
       
    • Adjustment
      NULL
       
    • Count
      NULL
       
  • Property
    EngDiff
    LP208616-5
  • Time
    24H
    LP6924-7
  • System
    Urine
    LP7681-2
    • System Core
      Urine
      LP7681-2
    • Super System
      NULL
       
  • Scale
    Qn
    LP7753-9
  • Method
    NULL
     

Basic Attributes

Class
CHEM
Type
Laboratory
First Released
Version 2.56
Last Updated
Version 2.56 (ADD)
Order vs. Observation
Both

Member of these Panels

LOINCLong Common Name
81232-1Supersaturation panel - 24 hour Urine

Language Variants Get Info

TagLanguageTranslation
cs-CZCzech (Czechia)Hydroxyapatit:Energetický rozdíl:24 hodin:Moč:Kvantitativní:
el-GRGreek (Greece)Υδροξυαπατίτης:EngDiff:24H:Ούρα:Qn:
Synonyms: 24H CHEM EngDiff Qn Ούρα Υδροξυαπατίτης
es-ESSpanish (Spain)Hidroxiapatita:Diferencia de energía:24 horas:Orina:Qn:
Synonyms: Cuantitativo
es-MXSpanish (Mexico)Hidroxiapatita:Diferencia energética:24H:Orina:Cuantitativo:
fr-FRFrench (France)Hydroxyapatite:Energie(différence):24H:Urine:Numérique:
it-ITItalian (Italy)Idrossiapatite:Differenza di energia:24h:Urine:Qn:
Synonyms: 24 Ore Chimica
pl-PLPolish (Poland)Hydroksyapatyt:różnica energii:24h:mocz:ilościowy:
Synonyms: 24 godziny
zh-CNChinese (China)羟基磷灰石:能量差:24小时:尿液:定量型:
Synonyms: 1天;1日;24.0小时;一天;一日;二十四个小时;二十四小时 化学;化学检验项目;化学检验项目类;化学类;化学试验;非刺激耐受型化学检验项目;非刺激耐受型化学检验项目类;非刺激耐受型化学试验;非刺激耐受型化学试验类 可用数量表示的;定量性;数值型;数量型;连续数值型标尺 尿;小便;下泉 羟磷灰石;氢氧磷灰石;氢氧基磷灰石;羟基灰石 能量（差值、差异、差别、差额、区别）;能量差值;能量差;能差

Example Units

UnitSource
kJ/molExample UCUM Units

LOINC Terminology Service (API) using HL7® FHIR® Get Info

CodeSystem lookup
https://fhir.loinc.org/CodeSystem/$lookup?system=http://loinc.org&code=81622-3