Renin Activity and Aldosterone

CPT Code(s):

  • 82088
  • 84244

Collection Procedure:

  • 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”
    Label the serum tube “serum−aldosterone”

Specimen Requirements:

Type: Serum (refrigerated) and plasma (frozen)

Container/Tube:gel-barrier tube and lavender-top tube (EDTA)

Sample Volume: 1 mL serum and 1 mL plasma

Minimum Volume: 0.3 mL serum and 0.8 mL plasma (These volumes are insufficient for repeat testing.)

Storage: After centrifuging the collected specimen, refrigerate the serum and freeze the plasma.

Rejection Criteria:

  • Recently administered isotopes
  • Gross hemolysis
  • Gross lipemia


Renin: Radioimmunoassay