Vitamin C (With Dilution)

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Turnaround Time: 3-5 Days
CPT Code:


Test Type: 1 mL Plasma, frozen and protected from light
Stability Time:

14 Days


Evaluation of vitamin C levels.


Component(s) Panel/Test Reflex Conditions
Test: 123254 Vitamin C (with dilution)  

Collection Details:

Collection Instructions:

Please note that this test is to be used for patients on high-dose vitamin C (eg, cancer therapy) in which results are expected to be very high relative to the reference interval.

Green-top (lithium heparin) tube; amber plastic transport tube with amber-top. (If amber tubes are unavailable, cover standard transport tube completely, top and bottom, with aluminum foil. Identify specimen with patient name directly on the container and on the outside of the aluminum foil. Secure with tape.) For amber plastic transport tube and amber-top, order LabCorp No. 23594.

Collect blood by venipuncture into a green-top containing lithium heparin and mix immediately by gentle inversion at least six times to ensure adequate mixing. Plasma must be separated from cells immediately after venipuncture and transferred to light-protected amber plastic tube. Separated plasma must be placed on dry ice for shipment within 4 hours of separation. To avoid delays in turnaround time when requesting multiple tests on frozen samples, please submit separate frozen specimens for each test requested.