Cystine, Pl Univ of California
Centralized Core Laboratory:Chemistry
Yellow Top (ACD Solution A) tube: Whole Blood
5.0 mL (minimum 2.5 mL)
Cause for rejection:
Yellow top with ACD Solution B is NOT acceptable.
Refrigerate within 1 hour of collection
Sent to reference lab
Intracellular Cystine Assay
Special tube required. Do not Freeze. Collect and ship specimens Monday-Thursday by FedEx Priority Overnight on the same day the sample is collected.
Indicate Date and Time of last medication dose.
Reference range is available on patient report