Test Details

Mnemonic

DREN

Ordering Code

1003995

CPT-4 Code(s)

84244

Specimen Information

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.

Collect

Lavender EDTA

Specimen Preparation

Centrifuge in a non-refrigerated centrifuge, separate plasma from cells and send 1.5 mL plasma frozen in a screw capped plastic vial. CRITICAL FROZEN.

Minimum Volume

1.0 mL

Transport Temperature

Critical frozen

Rejection Criteria

Hemolyzed, grossly lipemic or icteric specimens, dark blue trace element EDTA, non-frozen samples

Stability

Room temperature: Unacceptable
Refrigerated: Unacceptable
Frozen: 30 days

Methodology

Chemiluminescence
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Reference Range

3.1 - 57.1 pg/mL
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Performing Laboratory

Warde Medical Laboratory
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