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Test Code
RENI
Test Name
Renin Activity
CPT Codes
84244
Expected Turnaround Time
4-6 days
Clinical Utility

Measurement of the Plasma Renin activity is useful in evaluating hypertension.
Specimen and Container Info

Specimen Type: Plasma

Collection Container: Lavender Top (EDTA)

Desired Specimen Volume: 0.8 mL
Collection Instructions
  1. Collect a mid-morning blood sample after patient has been upright (sitting, standing, or walking) for a minimum of 2 hours, then have them sit 5-15 minutes prior to collection.
  2. Collect a lavender top (EDTA) tube via venipuncture.
Processing and Submission Instructions
  1. Separate plasma from cells.
  2. Transfer 0.8 mL of plasma to a clear aliquot tube (screw cap).
Patient Preparation

Collect a mid-morning blood sample after patient has been upright (sitting, standing, or walking) for a minimum of 2 hours.
Transport Instructions

Transport to the laboratory frozen. 
Stability Requirements

Room Temperature

24 hours

Refrigerated

 24 hours

Frozen

28 days
Causes for Rejection
  • Plasma separator tube
  • Gross hemolysis
  • Grossly lipemic
  • Thawed specimen
Methodology
Chromatography/Mass Spectrometry
Reference Intervals

 See patient report.
Alternate Names
  •  Plasma Renin Activity, LC/MS/MS
Reference Lab
Quest Diagnostics Nichols Institute
Testing Schedule
Routine, daily
The American Medical Association (AMA) Current Procedural Terminology (CPT) codes published by HNL Lab Medicine are guidelines and are intended for informational purposes only. CPT coding is the exclusive responsibility of the billing entity. View the Terms.
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