Referred Tests
| Web: | mayocliniclabs.com |
|---|---|
| Email: | mcl@mayo.edu |
| Telephone: | 800-533-1710 |
| International: | +1 855-379-3115 |
| Values are valid only on day of printing. | |
Test ID: TDP
Thiamine (Vitamin B1), Whole Blood
Specimen Type 
Describes the specimen type validated for testing
Whole Blood EDTA
Shipping Instructions
Specimen Required Defines the optimal specimen required to perform the test and the preferred volume to complete testing
Patient Preparation: Fasting overnight (12-14 hours). Infants-draw prior to next feeding. Water can be taken as needed.
Supplies: Amber Frosted Tube, 5 mL (T192)
Collection Container/Tube: Lavender top (EDTA)
Submission Container/Tube: Amber vial
Specimen Volume: 4 mL
Collection Instructions:
1. Invert 8 to 10 times to mix blood.
2. Transfer whole blood into amber vial or tube and freeze within 24 hours of collection.
Forms
If not ordering electronically, complete, print, and send a General Request (T239) with the specimen.
Specimen Minimum Volume Defines the amount of sample necessary to provide a clinically relevant result as determined by the Testing Laboratory
0.5 mL
Reject Due To Identifies specimen types and conditions that may cause the specimen to be rejected
| Gross lipemia | Reject |
| Other | Glass vial Clotted specimen |
Specimen Stability Information Provides a description of the temperatures required to transport a specimen to the performing laboratory, alternate acceptable temperatures are also included
| Specimen Type | Temperature | Time | Special Container |
|---|---|---|---|
| Whole Blood EDTA | Frozen | 28 days | LIGHT PROTECTED |