Ascorbic Acid (Vitamin C), Plasma | KK Women's and Children's Hospital

Specimen Container	Lithium heparin tube (To be obtained from DPLM Client Services)
Specimen Requirement	Whole Blood: 2 mL
Specimen Storage/Transport	Send specimen immediately with ice pack to laboratory and process within 4 hours of collection. Spin down the whole blood. Aliquot plasma into amber vial to protect from light. Freeze plasma immediately before the next transport is available.
Orderable as STAT?	No
Turn Around Time	1 Month
Testing Laboratory Location	NRL
Laboratory	Mayo Medical Laboratories in Rochester
Contact Number	6394 1352
Day and Time Performed	Monday through Friday
Orderable on CPOE?	No
Downtime Form	Clinical Chemistry - Form A
Additional Information	Patient Preparation: Fasting 12 hours required; infants should have specimen collected before next feeding. Please refer to NUH Test Catalog for more details.

Last Updated - 22 Dec 2025