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Specimen Container: Lavender
Collection and handling:
Centrifuge specimen, transfer plasma to plastic, screw cap transport tube and freeze immediately
Specimen Type: Blood
In order to facilitate interpretation of results patient should be taken off medications for at least three weeks prior to sample collection. Dietary sodium levels during the period prior to testing can affect renin levels.Sodium restriction tends to cause increase in renin activity while supplementation can result in lower values. It is recommended that patient be ambulatory for at least 30 minutes prior to blood collection.
Specimen volume: 1 mL frozen plasma