Vitamin B7 (Biotin)
2003184
 
Ordering Recommendation
This test is NOT indicated for diagnosing patients with biotinidase deficiency or as a follow up of an abnormal newborn screen for biotinidase deficiency. Use in combination with other tests to confirm or monitor patients with biotinidase deficiency.
Mnemonic
B7
Methodology
Bioassay
Performed
Varies
Reported
3-19 days
New York DOH Approval Status
Specimens from New York clients will be sent out to a New York DOH approved laboratory.
Specimen Required
Patient Preparation
 
Collect
Plain red or serum separator tube (SST).  
Specimen Preparation
Allow specimen to clot for 30 minutes and separate from cells. Transfer 2 mL serum to an ARUP Amber Transport Tube and freeze immediately. Protect from light. (Min: 1 mL)  
Storage/Transport Temperature
CRITICAL FROZEN. Separate specimens must be submitted when multiple tests are ordered.  
Unacceptable Conditions
Grossly hemolyzed or lipemic specimens. Thawed specimens or specimens not protected from light.  
Remarks
 
Stability
Ambient: Unacceptable; Refrigerated: Unacceptable; Frozen: 2 weeks  
Reference Interval
By report
Interpretive Data
Note
CPT Code(s)
84591
Components
Component Test Code*Component Chart Name
2003185Vitamin B7 (Biotin)
* Component test codes cannot be used to order tests. The information provided here is not sufficient for interface builds; for a complete test mix, contact interface support at interface.support@aruplab.com.
Cross References
  • Vitamin H (Vitamin B7 (Biotin))
Performed at Cambridge Biomedical Research Group