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Test ID BLOD0477 Thiamine (Vitamin B1), Whole Blood

Important Note

Note:  Fasting overnight (12-14 hours). Infants-collect prior to next feeding. Water can be taken as needed.

Lavender top (EDTA), WHOLE BLOOD, Protected from light and FROZEN

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.

Useful For

Assessment of thiamine deficiency

 

Measuring thiamine levels 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 or tube to protect from light.



Specimen Required


Patient Preparation:

1. Patient should fast overnight (12-14 hours); infants should have specimen collected just before next feeding. Water can be taken as needed.

2. For 12 hours before specimen collection, patient should not take vitamin supplements.

Supplies: Amber Frosted Tube, 5 mL (T915)

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.


Reject Due To

Gross lipemia Reject
Glass vial
Clotted specimen		 Reject

Specimen Minimum Volume

0.5 mL

Specimen Stability Information

Specimen Type Temperature Time Special Container
Whole Blood EDTA Frozen 28 days LIGHT PROTECTED

Day(s) Performed

Monday through Friday

Report Available

3 to 6 days

Method Name

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

Performing Laboratory

Mayo Clinic Laboratories in Rochester

CPT Code Information

84425

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. It has not been cleared or approved by the US Food and Drug Administration.

Forms

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

Secondary ID

42356
Sanford Laboratories - Sioux Falls/Rapid City Additional Information:

SANFORD LABORATORY INTERFACE BUILD INFORMATION

Result Code  Result Code Description 
15989 Vitamin B1