Laboratory Test Information Guide

Details for Aldosterone to Renin Concentration Ratio, Plasma

Test Name: Aldosterone to Renin Concentration Ratio, Plasma
Alternate Name(s):  
Laboratory: Endocrinology
Specimen Type: Adult:
4 mL Lavender top Vacutainer tube

Pediatric:
2-10 years: 3 mL Lavender top (EDTA) Vacutainer tube
Collection Information: Minimum volume of plasma required is 1 mL.

Patient should be on a normal salt diet for at least 3 days prior to test.

Blood should be collected midmorning (ideally), after the patient has been up (sitting, standing, or walking) for at least 2 hours and then seated for 5-15 minutes.
Requisition: GENERAL LABORATORY REQUISITION
Test Schedule: Monday - Friday
0800 - 1600
Turnaround time from when specimen
is received in testing laboratory:
 
Routine
5 days
Stat
 
 
Reference Range: This ratio is used as a screening test for primary hyperaldosteronism.
Ratios ≥ 144 are considered screen positive and warrant further investigation.
Effective Date: 2014-11-21
Revised Date: 2018-04-12
Critical Value:  
Interpretive Comments: This ratio is calculated with aldosterone in units of pmol/L and renin in units of ng/L.
Special Processing:  
Comments:  
Method of Analysis: Diasorin Chemiluminescence
Critical Information Required:  
Storage & Shipment: Store and ship plasma frozen.
System Codes: 
Cerner
ARCR
 
Referred To:  

Questions? Comments? Contact Laura Gopaul