Potassium

Test Code:  K
Assay Schedule:  Daily
Reporting Schedule:  Same day
CPT:  84132

Collection

Specimen(s):
  • Serum or Plasma

Acceptable Container(s):
  • SST gel (red top)
  • Lithium Heparin (green top)
  • Lithium Heparin gel-barrier (green top)

Volume:
  • Preferred: 1.0mL
  • Minimum: 0.3mL

Stability:
  • Ambient: 4 days
  • Refrigerated: 1 week
  • Frozen: 6 months

Processing & Shipping

Specimen Processing:
Allow red top to clot for 20-30 minutes. Centrifuge serum or plasma immediately.

Shipping Instructions:
Ship refrigerated

Rejection Criteria:
EDTA, citrate, fluoride/oxalate plasma and hemolyzed specimens are unacceptable.

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