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Paediatric Laboratory Medicine

Biotinidase

Clinical Significance

Diagnosis of Biotinidase deficiency

Test Name

Biotinidase

Test Code

YBTN

Division

Metabolic Diseases

Method

Enzymatic, colorimetric

Turn Around Time

Bacth test

Specimen Type

Plasma and Serum

Minimum Specimen Requirements

100 µL

Storage/Transportation

Ship frozen

Shipping and Contact Information

The Hospital for Sick Children
Rapid Response Laboratory
170 Elizabeth Street, Room 3642
Toronto, ON
M5G 2G3
Canada
Phone: 416-813-7200
Phone: 1-855-381-3212

Reference Range

 Female

Age

Normal Range
(nmol/hr/mL)

Suggestive Profound Deficiency Cutoff
(nmol/hr/mL)

< 2 mo

57 – 765

34

2 mo – < 10 mo

408 – 907

63

10 mo – < 6y

439 – 800

67

6 – < 19y

358 – 792

61

 

Male

Age

Normal Range
(nmol/hr/mL)

Suggestive Profound Deficiency Cutoff
(nmol/hr/mL)

< 2 mo

57 – 765

34

2 mo – <10 mo

408 – 907

63

10 mo – < 6y

439 – 800

67

6 – < 19y

480 – 878

65