Laboratory Test Detail

Last Updated: September 18, 2020 @ 9:13 am

91294

Aldosterone/Renin Activity Ratio

Specimen:Collect:
  • One Lavender (EDTA)
  • One SST

Also Acceptable:
  • One Pink Top (EDTA)
  • One Red Top
Submit:
  • 1 mL (Min:0.5 mL) Serum . Submit Frozen. Submit in a Standard Transport Tube.
  • 2 mL (Min:1.5 mL) Plasma . Submit Frozen. Submit in a Standard Transport Tube.
Special Handling:
  • Separate aliquot required for each frozen test ordered
  • Patient Prep: Collect midmorning after patient has been sitting, standing, or walking for at least 2 hours, and seated for 5-15 minutes.

    Specimen Preparation: Separate from cells ASAP or within 2 hours of collection.
    Serum: Transfer 1 mL serum to an ARUP Standard Transport Tube. (Min: 0.5 mL)
    AND
    Plasma: Transfer 2 mL EDTA plasma to an ARUP Standard Transport Tube and freeze immediately. (Min: 1.2 mL)

    Storage/Transport Temperature: Both specimens should be submitted together for testing.
    Serum: Frozen Only
    Plasma: CRITICAL FROZEN. Separate specimens must be submitted when additional tests are ordered.

    Stability (collection to initiation of testing): Serum: Ambient: 8 hours; Refrigerated: 5 days; Frozen: 1 month
    Plasma: Ambient: 6 hours; Refrigerated: Unacceptable; Frozen: 1 month
Rejection Criteria:
  • Hemolyzed specimens
  • Specimen not submitted frozen
  • Plasma collected in citrate, heparin, or oxalate.
Stability:Ambient: 6 Hour(s); Refrigerated: Unacceptable; Frozen: 1 Month(s); Incubated: Unacceptable
Methodology:
  • Quantitative Chemiluminescent Immunoassay
Performed:Sun-Sat
Reported:3-6 Day(s)
CPT Codes:
  • 82088
  • 84244
Interpretive Data:Please see report for interpretive data.
Components:
  • 91012 - ALDOSTERONE
  • 91196 - RENIN ACTIVITY
  • 93584 - RATIO
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