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Epic Code LAB1230657 Direct Renin

Important Note

Link: Renal Vein Sampling Instructions

Interface Order Alias


Quick Collect


Collection Instructions

Specimen Collection: Blood


Container(s): EDTA Lavender Tube

Preferred Volume to Collect: 3 mL

Minimum Volume to Collect: 2 mL

Neonate Volume to Collect: 2 mL

Capillary collect ok? No

Microtainer acceptable: No


Suggested Collection Instructions:

  1. Collect midmorning after the patient has been sitting, standing, or walking for at least 2 hours.
  2. Allow patient to sit 5-15 minutes prior to the draw.
  3. Avoid fist clenching and wait at least 5 seconds after the tourniquet release (if used) to insert the needle.
  4. Collect slowly with a syringe and needle. 
  5. Preferably do not use a Vacutainer to minimize the risk of spuriously raising potassium.
  6. Collect blood carefully, avoiding stasis and hemolysis.
  7. Invert tube gently 8 to 10 times.
  8. Maintain sample in Lavender EDTA at room temperature (ambient), never refrigerate.
  9. Specimen should be processed (aliquoted) within 30 minutes. See Processing Instructions below. Aliquot should be frozen.


Processing Instructions (Laboratory, Outpatient or Off-site collection)

  • Processed Specimen: Plasma
  • Centrifuge/Spin: Yes
  • Aliquot: Yes
  • Processed Minimum Volume: 1 mL
  • Processing Instructions:

    • Centrifuge after collection.
    • Reject if plasma is hemolyzed.
    • Within 30 minutes aliquot plasma into a plastic transport tube and freeze immediately.
  • Transport Temperature: Frozen

Rejection Criteria

  • Specimen not centrifuged within 30 minutes after collection.
  • Plasma hemolyzed.
  • Centrifuged plasma not meeting specimen stability requirements.

Specimen Stability


  • Ambient: not applicable
  • Refrigerated: 24 hours
  • Frozen:  28 days
  • Laboratory Retention:  7 days

Test Frequency

Twice per week: Monday and Thursday. Average turn around time is 1 to 5 days.

Reference Range

Male and Female: <45.7 pg/mL

Performing Department


Performing Department Laboratory Location

Corewell Health Reference Laboratory, Grand Rapids, MI





CDM Code


Epic Test ID



Result name: 35570-1

Reviewed Date