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Chloride:phosphate ratio with hypercalcemia secondary to thiazide administration. 1983

F H Lawler, and H P Janssen

The chloride:phosphate ratio is of only limited value in aiding the clinician in the differential diagnosis of hypercalcemia. The use of thiazide diuretics may cause hypercalcemia with a chloride:phosphate ratio said to be consistent with a diagnosis of primary hyperparathyroidism. Parathormone assay remains the "gold standard" for definitive diagnosis of hyperparathyroidism.

UI MeSH Term Description Entries
D006961 Hyperparathyroidism A condition of abnormally elevated output of PARATHYROID HORMONE (or PTH) triggering responses that increase blood CALCIUM. It is characterized by HYPERCALCEMIA and BONE RESORPTION, eventually leading to bone diseases. PRIMARY HYPERPARATHYROIDISM is caused by parathyroid HYPERPLASIA or PARATHYROID NEOPLASMS. SECONDARY HYPERPARATHYROIDISM is increased PTH secretion in response to HYPOCALCEMIA, usually caused by chronic KIDNEY DISEASES.
D010710 Phosphates Inorganic salts of phosphoric acid. Inorganic Phosphate,Phosphates, Inorganic,Inorganic Phosphates,Orthophosphate,Phosphate,Phosphate, Inorganic
D002712 Chlorides Inorganic compounds derived from hydrochloric acid that contain the Cl- ion. Chloride,Chloride Ion Level,Ion Level, Chloride,Level, Chloride Ion
D003951 Diagnostic Errors Incorrect or incomplete diagnoses following clinical or technical diagnostic procedures. Diagnostic Blind Spots,Errors, Diagnostic,Misdiagnosis,Blind Spot, Diagnostic,Blind Spots, Diagnostic,Diagnostic Blind Spot,Diagnostic Error,Error, Diagnostic,Misdiagnoses
D004232 Diuretics Agents that promote the excretion of urine through their effects on kidney function. Diuretic,Diuretic Effect,Diuretic Effects,Effect, Diuretic,Effects, Diuretic
D005260 Female Females
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D006934 Hypercalcemia Abnormally high level of calcium in the blood. Milk-Alkali Syndrome,Hypercalcemias,Milk Alkali Syndrome,Syndrome, Milk-Alkali
D000368 Aged A person 65 years of age or older. For a person older than 79 years, AGED, 80 AND OVER is available. Elderly
D001581 Benzothiadiazines Heterocyclic compounds of a ring with SULFUR and two NITROGEN atoms fused to a BENZENE ring. Members inhibit SODIUM-POTASSIUM-CHLORIDE SYMPORTERS and are used as DIURETICS.

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