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Test Code CA/Phos/MG Oncology Monitor 2

Clinical System Name

Oncology Chemistry Monitor 2


Onc Chem2

Sample Requirements

Specimen: Whole Blood

Container(s):  Gold SST, Lt. Green/Lithium Heparin Microtainer, Dark Green/Sodium Heparin, Red, Gold Microtainer

Preferred Vol:  1.0 mL

Minimum Vol:  0.5 mL

Note: Avoid hemolysis. Verify ordering provider would like calcium, phosphorous, and magnesium.

Processing Instructions

Reject due to: Hemolysis, age of specimen, incorrect collection container.

Spin: Y

Aliquot: Y

Storage location: Core Chemistry Refrigerator


Off-site collection:  Avoid hemolysis. Specimen should be centrifuged within 2 hours of collection. Spin blood and transfer serum or plasma to plastic tube and refrigerate or freeze.


Specimen Type Temperature Time
Serum or Plasma RT ≤ 4 h
Serum or Plasma 2-8 C ≤ 7 d
Serum or Plasma -20 C or -70 C ≤ 30 d


STAT Performed TAT
Y 24/7 1 h

Performing Laboratory

Seattle Children's Laboratory    



Department:  Core Chemistry

Phone Number: 206-987-2617 (Client Services)

Reference Range

Refer to individual tests for reference ranges.

CPT Codes




Critical Values

Refer to individual tests for critical values.