ArticleUrolithiasis2013
A proposed method for approximate estimates of the ion-activity products of calcium oxalate and calcium phosphate in spot-urine samples or in urine samples collected during less well defined periods of time.
Article in Urolithiasis, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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Who cites it
5 citing papers in PubMed, 6 citations in OpenAlex.
- Urinary adhesion molecules with ERK signaling as predictive biomarkers for kidney stones: a pilot study.BMC urology · 2026Article
- Poor compliance of recurrent stone formers to increase their fluid intake in spite of repeated recommendation.Clinical kidney journal · 2026Article
- Calcium Kidney Stones are Associated with Increased Risk of Carotid Atherosclerosis: The Link between Urinary Stone Risks, Carotid Intima-Media Thickness, and Oxidative Stress Markers.Journal of clinical medicine · 2020Article
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1 author at 1 institution in 1 country.
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Abstract
The purpose of this study is to derive approximate estimates of ion-activity products of CaOx (APCaOx) and CaP (APCaP) useful for spot urine or other less well defined short-term urine collections. In accordance with previously applied and described principles for estimating ion-activity products, the intention was to derive simplified estimates of AP(CaOx)CONC and AP(CaP)CONC by using urine concentrations of the most important determinants of APCaOx and APCaP. A comparison thus was made between estimates derived in that manner and AP(CaOx) index and AP(CaP) index obtained from calculations based on analysis of 24 h urine samples. The best fit between estimates of AP(CaOx) index in 24 h urine and AP(CaOx) indexCONC was obtained with the following formula (r = 0.99; p = 0.0000): [Formula in text] The corresponding formula for AP (CaP) indexCONC was derived from comparison with the corresponding calculations of AP(CaP) index in 24 h urine (r = 0.91; p = 0.0000): [Formula in text] The proposed simplified formulas enable calculation of approximate estimates of APCaOx and APCaP in spot-urine samples or any kind of urine collection for which duration of the collection period is less well known and by using the concentrations (c) of the variables in mmol/L in the two formulas.
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