Congo red test

The kidney is an organ that generates and excretes urine, and has endocrine function, which can excrete waste generated by metabolism, enter foreign bodies and toxins, and regulate water, electrolyte and acid-base balance. If the kidney develops a lesion, the above substance clearance function is reduced. According to this principle. Some exogenous pigments (dyes) are artificially administered to understand the function of renal excretion. The commonly used dye is Congo red. Basic Information Specialist classification: urinary examination classification: biochemical examination Applicable gender: whether men and women apply fasting: not fasting Tips: Not suitable for the crowd: pregnant women, may cause cancer, may have the risk of harming unborn babies. Normal value Intravenous 1 hour retention rate >60% Clinical significance Number of disappearances > 60% renal amyloidosis. The number of disappearances is 40 to 60% of tubule steatosis. When the serum retention rate is <40% and there is no Congo red in the urine, it is mainly seen in renal amyloidosis, and also in multiple myeloma, long-term chronic infectious diseases and macroglobulinemia. Nephrotic syndrome has a false retention rate, because the protein in the urine can be adsorbed together with the non-toxic dye, and the urine is characterized by red. If there is a large amount of Congo red in the urine, it may indicate a tubular fatty lesion or similar lesion. Need to check people with multiple myeloma, chronic infection, macroglobulinemia, nephrotic syndrome and other diseases. Precautions Usage and dosage: intravenous injection: 0.1g each time. Pre-examination contraindications: Because not any drug or any situation can not be intravenously injected or instilled, it depends on different conditions, different drugs, different treatment methods (therapeutic effect), and even the patient's physique. Please consult your doctor for details. Unsuitable for the population: pregnant women may cause cancer and may be at risk of harming unborn babies. Inspection process Inspection method: intravenous injection. Wait an hour after the injection and then perform a urine test. This test should use a tuberculin syringe to ensure accurate injection. In addition, urine should be collected on time, and patients should be drained every time they urinate. Not suitable for the crowd Pregnant women. Adverse reactions and risks Pregnant women may be carcinogenic and may be at risk of harming unborn babies.

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