3.0 mL Serum from a Red Top Tube in a Plastic Vial
3 days Ambient
Refrigerated
Frozen
Trough levels are most reproducible
Submission of the minimum volume results in an elevated reporting limit and inability to repeat analysis
0.5 mL
0.5 - 20.0 ng/ml
Detection Limit:
0.2 ng/ml
40.0 ng/ml
Expected range for low dose therapy: 0.5 - 2.25 ng/ml
Expected range for high dose therapy: 5.0 - 20.0 ng/ml
Some patients respond well to the lower range of therapy, while other patients require the higher concentrations to achieve desired therapeutic effects.
00910084
80342