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Test Code BIOTN Biotin, Serum


Ordering Guidance


If testing for biotinidase deficiency is requested, order BIOTS / Biotinidase, Serum.



Shipping Instructions


Freeze specimens within 3 days of collection and send frozen.



Specimen Required


Collection Container/Tube:

Preferred: Serum gel

Acceptable: Red top

Submission Container/Tube: Plastic vial

Specimen Volume: 1 mL

Collection Instructions: Centrifuge and aliquot serum into a plastic vial.


Useful For

Measurement of biotin in serum

 

Assessment of biotin concentrations in individuals taking biotin supplements

 

Investigation of unexpected results from immunoassays that utilize biotin-streptavidin detection methods

 

This test is not useful as a screen for biotinidase deficiency.

Method Name

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

Reporting Name

Biotin, S

Specimen Type

Serum

Specimen Minimum Volume

0.5 mL

Specimen Stability Information

Specimen Type Temperature Time Special Container
Serum Frozen (preferred) 30 days
  Refrigerated  7 days
  Ambient  24 hours

Reference Values

≥18 years: ≤0.3 ng/mL

Reference values have not been established for patients who are <18 years of age.

Interpretation

Biotin results that are significantly higher than the reference interval indicate biotin supplementation.

Clinical Reference

1. Elston MS, Sehgal S, Du Toit S, Yarndley T, Conaglen JV. Factitious Graves' disease due to biotin immunoassay interference-a case and review of the literature. J Clin Endocrinol Metab. 2016;101(9):3251-3255

2. Grimsey P, Frey N, Bendig G, et al. Population pharmacokinetics of exogenous biotin and the relationship between biotin serum levels and in vitro immunoassay interference. Int J Pharmacokinet. 2017;2:247-256

3. Katzman BM, Lueke AJ, Donato LJ, Jaffe AS, Baumann NA. Prevalence of biotin supplement usage in outpatients and plasma biotin concentrations in patients presenting to the emergency department. Clin Biochem. 2018;60:11-16

Performing Laboratory

Mayo Clinic Laboratories in Rochester

CPT Code Information

84591

LOINC Code Information

Test ID Test Order Name Order LOINC Value
BIOTN Biotin, S 1980-2

 

Result ID Test Result Name Result LOINC Value
606867 Biotin, S 1980-2

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.

Day(s) Performed

Tuesday

Report Available

2 to 7 days