Micronutrient, Vitamin B1 (Thiamine), Blood

Micronutrient, Vitamin B1 (Thiamine), Blood

Test Code

10189
84425
CPT Code is subject to a Medicare Limited Coverage Policy and may require a signed ABN when ordering.
10189
84425
CPT Code is subject to a Medicare Limited Coverage Policy and may require a signed ABN when ordering.
Not offered in Quest Diagnostics Nichols Institute (IFD) – San Juan Capistrano | Quest Nichols Institute -San Juan Capistrano, CA. Please provide SERVICE AREA INFORMATION to find available tests you can order.
In-home collection may be available in your area for purchase through Quest Mobile.

Clinical Significance

Micronutrient, Vitamin B1 (Thiamine), Blood - Vitamin B1 is required for branched-chain amino acid and carbohydrate metabolism. Vitamin B1 deficiency is most often due to alcoholism or chronic illness. In the early stage, patients with vitamin B1 deficiency exhibit anorexia, irritability, apathy, and generalized weakness. Prolonged deficiency causes beriberi.

Test Resources

None found for this test
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Test Details

Patient Preparation

Overnight fasting is required

Methodology

Chromatography/Mass Spectrometry

Assay Category

This test was developed and its analytical performance characteristics have been determined by Quest Diagnostics. It has not been cleared or approved by FDA. This assay has been validated pursuant to the CLIA regulations and is used for clinical purposes.

Reference Range(s)

≥18 years 78-185 nmol/L
Reference range not available for individuals <18 years for this micronutrient test.

LOINC® Codes, Performing Laboratory

Service Area must be determined
Overnight fasting is required

Methodology

Chromatography/Mass Spectrometry
This test was developed and its analytical performance characteristics have been determined by Quest Diagnostics. It has not been cleared or approved by FDA. This assay has been validated pursuant to the CLIA regulations and is used for clinical purposes.

Reference Range(s)

≥18 years 78-185 nmol/L
Reference range not available for individuals <18 years for this micronutrient test.
Service Area must be determined

Preferred Specimen(s)

2 mL whole blood collected in an EDTA (lavender-top) tube - protected from light

Alternative Specimen(s)

Foil wrapped transport tube protected from light

Minimum Volume

1 mL

Collection Instructions

Patients should be 18 years of age or greater.

Transfer whole blood to amber transport tube. If amber transport tube is not available, wrap tube in aluminum foil to protect from light. Freeze immediately.

Transport Container

Amber transport tube

Transport Temperature

Frozen

Specimen Stability

  • Room temperature: 8 hours
    Refrigerated: 5 days
    Frozen: 35 days

Reject Criteria

Received not protected from light

Setup Schedule

Service Area must be determined
2 mL whole blood collected in an EDTA (lavender-top) tube - protected from light
Foil wrapped transport tube protected from light
1 mL
Patients should be 18 years of age or greater.

Transfer whole blood to amber transport tube. If amber transport tube is not available, wrap tube in aluminum foil to protect from light. Freeze immediately.
Amber transport tube
Frozen
Room temperature: 8 hours
Refrigerated: 5 days
Frozen: 35 days
Received not protected from light
Service Area must be determined
Not offered in Quest Diagnostics Nichols Institute (IFD) – San Juan Capistrano | Quest Nichols Institute -San Juan Capistrano, CA. Please provide SERVICE AREA INFORMATION to find available tests you can order.
In-home collection may be available in your area for purchase through Quest Mobile.
Test Details

Clinical Significance

Test Resources

Reference ranges are provided as general guidance only. To interpret test results use the reference range in the laboratory report.

The CPT codes provided are based on AMA guidance and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payer being billed.

This material contains content from LOINC® (http://loinc.org). The LOINC Table, LOINC Table Core are copyright © 1995-2019, Regenstrief Institute, Inc. and the Logical Observation Identifiers Names and Codes (LOINC) Committee and is available at no cost under the license at http://loinc.org/license.

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