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Sodium nitroprusside is used in a separate urinalysis test known as the cyanide nitroprusside test or Brand's test. In this test, sodium cyanide is added first to urine and let stand for about 10 minutes.
The test used in the urine test strips is based on the reaction of sodium nitroprusside (nitroferricyanide). In this reaction the acetoacetic acid in an alkali medium reacts with the sodium nitroprusside producing a magenta coloured complex: [6] [14]
Test strips use sodium nitroprusside to detect acetoacetate, and those with a glycine additive can detect acetone; however, none detect BHB. The reaction of ketones with sodium nitroprusside in an alkaline medium turns the test pad purple. [76] Ketonuria occurs in uncontrolled type 1 diabetes and in diabetic ketoacidosis. [77]
Urine: For cystine crystals, and casts. The most specific test is the cyanide–nitroprusside test; ... In order to alkalize the urine, sodium bicarbonate has been ...
In severe diabetic ketoacidosis, the dipstix reaction based on sodium nitroprusside may underestimate the level of ketone bodies in the blood. It is sensitive to acetoacetate only, and the ratio of beta-hydroxybutyric to acetoacetate is shifted from a normal value of around 1:1 up to around 10:1 under severely ketoacetotic conditions, due to a ...
The cyanide compound sodium nitroprusside is used mainly in clinical chemistry to measure urine ketone bodies mainly as a follow-up to diabetic patients. On occasion, it is used in emergency medical situations to produce a rapid decrease in blood pressure in humans; it is also used as a vasodilator in vascular research.
Clevidipine also contains glycerin (22.5 mg/mL), purified egg yolk phospholipids (12 mg/mL), and sodium hydroxide to adjust pH. Clevidipine has a pH of 6.0–8.0 Clevidipine has a pH of 6.0–8.0 In the perioperative patient population Clevidipine produces a 4–5% reduction in systolic blood pressure within 2–4 minutes after starting a 1–2 ...
The Jaffe reaction is a colorimetric method used in clinical chemistry to determine creatinine levels in blood and urine. In 1886, Max Jaffe (1841–1911) wrote about its basic principles in the paper Über den Niederschlag, welchen Pikrinsäure in normalem Harn erzeugt und über eine neue Reaction des Kreatinins in which he described the properties of creatinine and picric acid in an alkaline ...