PHARMATEK · Fonction rénale

Calculateur du rapport des clairances calcium/créatinine

Calculer le rapport brut des clairances calcium/créatinine et l’excrétion fractionnelle du calcium à partir de concentrations sanguines contemporaines et d’une collecte urinaire complète de 24 heures.

Révision clinique en cours

La révision clinique doit être complétée.

Cet outil fait partie de la bibliothèque PharmaTek. Son calcul reste indisponible au public jusqu’à la validation de sa formule, de ses limites et de ses sources.

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Sources, population et validation

État: clinical-review-pending
Version de la méthode: Calcium/creatinine clearance-ratio arithmetic v1: CCCR = (U_Ca × P_Cr) / (P_Ca × U_Cr), and fractional calcium excretion (%) = CCCR × 100. U_Ca and P_Ca are measured total-calcium concentrations, and U_Cr and P_Cr are creatinine concentrations, from concurrent blood and one complete 24-hour urine collection. Calcium accepts mg/dL or mmol/L and is normalized with 1 mg/dL = 10/40.078 mmol/L using NIST calcium atomic weight 40.078; serum creatinine accepts mg/dL or µmol/L and urine creatinine additionally accepts mmol/L, normalized with 1 mg/dL = 10,000/113.1179 µmol/L using NIST creatinine molecular weight 113.1179. Outputs are raw and unrounded
Population: People with quantitative measured-total-calcium and creatinine concentrations from a concurrent blood specimen and one complete 24-hour urine collection, after verifying collection completeness and timing, specimen and analyte identities, reported units, quantitative source results, and compatible assay context. Calcium inputs must be concentrations, not total daily amount, and the calculation is limited to raw arithmetic without applying an interpretive cutoff.
Limites et exclusions: Random, fasting, or other spot urine as a silent substitute for the complete 24-hour urine collection; incomplete, mistimed, mismatched, or non-contemporaneous collections; unverified collection completeness, timing, specimens, analytes, assays, units, or source results; or inferred values or units. · Ionized calcium, albumin-corrected calcium, adjusted calcium, app-calculated calcium, or total 24-hour calcium amount substituted for measured total-calcium concentration; incompatible concentration units or assays; or derivation of any missing measurement. · Any cutoff, threshold, category, FHH or PHPT classification, diagnosis, genetic-testing recommendation, surgery decision, prognosis, treatment, management, or other clinical decision. Published interpretive performance is limited, and diagnostic use in renal impairment, vitamin D insufficiency, or pregnancy is not validated by the cited consensus.

Origine de l’outil PharmaTek

Outil importé de la bibliothèque PharmaTek de MDose. Aucune date de révision clinique indépendante n’est documentée dans cette version.

Bibliothèque source: PharmaTek · MDose
Version importée: 4b66536936ed
État de publication: Révision clinique en cours

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