This sendout test is restricted and cannot be ordered, collected or sent by Allina Health unless an exception has been approved in advance.
Rare exceptions for approved clinical indications require pathologist review through Client Services before placing an order or collecting a specimen.
Orders or specimens received without pre-approval will be cancelled.
Immediately following collection, mix sample thoroughly by gentle inverting 8 - 10 times, to prevent clotting
Send specimen in original tube.
Do not transfer blood to other containers.
Refrigerated – 20 days
Kinetic Spectrophotometry
≥ 12 months: 46.9 - 90.1 mg/dL RBC
Reference values have not been established for patients who are <12 months of age.