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Test Name: Renin Activity and Aldosterone
Test Code: 000703
Other Names: N/A
Test Includes: Renin Activity, Plasma, Aldosterone
Specimen Requirements: Serum (refrigerated) AND plasma (FROZEN), 1 mL serum AND 1 mL plasma
Container: Red-top tube or gel-barrier tube AND lavender-top (EDTA) tube
Collection Instructions: Refer to test descriptions for individual tests: Renin Activity, Plasma (002006) and Aldosterone, (004374) for more detailed patient preparation and test collection information. After collection, IMMEDIATELY CENTRIFUGE THE LAVENDER-TOP TUBE AT ROOM TEMPERATURE, TRANSFER PLASMA TO A TRANSPORT TUBE, AND FREEZE IMMEDIATELY. Label this tube "frozen plasma - renin." If a red-top tube is used, transfer separated serum to a plastic transport tube. Label the serum tube "serum - aldosterone." To avoid delays in turnaround time when requesting multiple tests on frozen samples, PLEASE SUBMIT SEPARATE FROZEN SPECIMENS FOR EACH TEST REQUESTED.
Stability: Refrigerate serum. FREEZE plasma.
Rejection Criteria / Special Instructions: 0
Methodology: Renin: radioimmunoassay (RIA); aldosterone: liquid chromatography/tandem mass spectrometry (LC/MS-MS)