DIRECT RENIN

Test Documentation
Specimen Required
Patient preparation: Angiotensin Converting Enzyme (ACE) Inhibitors should be avoided, if possible, for at least 48 hours prior to collection. Spironlactone (Aldactone) should be discontinued 4-6 weeks prior to testing. Patient should be on a normal sodium diet. Draw blood in 2 lavender EDTA tubes. Centrifuge, separate and send 2.5 mL plasma (1.5 mL minimum) frozen in a screw-capped plastic vial. CRITICAL FROZEN.

Rejection Criteria
Hemolyzed, grossly lipemic or icteric specimens, serum, heparin plasma

Methodology
Chemiluminescence

Stability
Room temperature: Unacceptable; Refrigerated: Unacceptable; Frozen: 1 month

Reference Range
3.1-57.1 pg/mL

Performed
Monday, Wednesday, Thursday

Turnaround Time5 days
Test CodeDREN
CPT-4 Code (s)
84244
LOINC Codes
35570-1

Warde
Medical
Laboratory