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Test ID BLOD0477 Thiamine (Vitamin B1), Whole Blood

Useful For

Assessment of thiamine deficiency

 

Thiamine measurement in patients with behavioral changes, eye signs, gait disturbances, delirium, and encephalopathy; or in patients with questionable nutritional status, especially those who appear at risk and who also are being given insulin for hyperglycemia

Specimen Type

Whole Blood EDTA


Shipping Instructions


Ship specimen in amber vial to protect from light.



Specimen Required


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.


Specimen Minimum Volume

0.5 mL

Reject Due To

Hemolysis

NA

Lipemia

Mild OK; Gross Reject

Icterus

NA

Other

Glass vial

Clotted specimen

Washed erythrocytes nonlight protected

Specimen Stability Information

Specimen Type Temperature Time
Whole Blood EDTA Frozen 14 days

Day(s) and Time(s) Performed

Monday through Friday

Analytic Time

2 days (not reported Saturday or Sunday)

Method Name

Liquid Chromatography-Tandem Mass Spectrometry (LC-MS/MS)

Performing Laboratory

Mayo Clinic Laboratories in Rochester

CPT Code Information

84425

Secondary ID

42356

Reporting Name

Thiamin (Vitamin B1), WB

Reference Values

70-180 nmol/L

Test Classification

This test was developed and its performance characteristics determined by Mayo Clinic in a manner consistent with CLIA requirements. This test has not been cleared or approved by the U.S. Food and Drug Administration.

Forms

If not ordering electronically, complete, print, and send a General Request (T239) with the specimen.

Sanford Laboratories - Fargo Additional Information:

SANFORD INTERFACE BUILD INFORMATION

Result Code Result Code Description
15989 Vitamin B1