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Clinical tests for chloride are typically performed on a patient's serum. Serum is the clear liquid that separates from the blood when it is allowed to clot. To obtain a serum sample, a healthcare provider will draw a sample of blood from the patient's vein using a needle and syringe. The sample is then placed in a tube and allowed to clot. The serum is then separated from the clot and collected for testing. The serum sample is then analyzed for chloride levels using a colorimetric test. This test measures the amount of chloride in the sample by measuring the intensity of a color change when a reagent is added to the sample. The results of the test are then reported as a numerical value.
All of the following must be considered when interpreting clinical findings and are too extensive to be covered on this site: