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Test Code RENIN Renin, Plasma Activity

Collection Container

Lavender (EDTA)

Specimen Required


Specimen Volume

1.0 mL

Minimum Specimen Volume

0.8 mL

Special Handling Instructions

Keep at room temperature before and during centrifugation. Whole
blood (unspun) is stable for 6 hours at room temperature.

Transport Temperature

Whole blood room temperature, plasma frozen

Specimen Stability

Room temperature: 6 hours (Whole blood and plasma),
Refrigerated: unstable, Frozen: 14 days (plasma)

Reasons for Rejection

Refrigeration at anytime is unacceptable, whole blood frozen


Radioimmunoassay (RIA)

Turnaround Time

3 – 7 days

Additional Information

To facilitate interpretation of test results, the patient should
be taken off medications for at least 3 weeks prior to sample
collection (only with the permission of the physician) Since
patient posture prior to collection affects renin levels, it is
recommended that the patient be ambulatory for at least 30 minutes
before blood collection

CPT Code