Specimen Requirements

Draw blood in a red-top (no additive) tube(s) 1 hour prior to next dose. Allow the blood to clot completely before centrifugation. Spin down and alliquot serum to a plastic tube. Label specimen with patient’s name (first and last), date of birth, date and time of draw and the phlebotomist’s initials.

Specimen stability:  Separated samples are stable for 24 hours at room temperature 
                                    2 days at 2-8°C
                                    5 months frozen at ≥-20°C 
Minimum volume:    1 mL