Biotinidase

Test Codes

EPIC: LAB1232137, Beaker: BIOTINIDASE, Quest: 70132

Department

Send Outs

Specimen Collection Criteria

Collect (preferred specimen): One Gold-top SST tube.
Also acceptable: One plain Red-top tube.

Physician Office/Draw Specimen Preparation

Let specimen clot 30 minutes, then centrifuge to separate serum from cells within one hour of collection. Transfer serum to a plastic transport tube and freeze (-20°C/-4°F or below).

Preparation for Courier Transport

Transport: 2.0 mL serum, frozen (-20°C/-4°F or below). (Minimum: 1.0 mL)

Rejection Criteria

• Hemolyzed specimen.
• Received at room temperature or refrigerated.
• Specimens not collected and processed as indicated.

In-Lab Processing

Let specimen clot 30 minutes, then centrifuge to separate serum from cells within one hour of collection. Transfer serum to a plastic transport tube and freeze (-20°C/-4°F or below).

Transport: 2.0 mL serum, frozen (-20°C/-4°F or below). (Minimum: 1.0 mL)

Storage

Specimen Stability for Testing:

Room Temperature (20-26°C or 68-78.8°F): Unacceptable
Refrigerated (2-8°C or 36-46°F): Unacceptable
Frozen (-20°C/-4°F or below): 30 days

Specimen Storage in Department Prior to Disposal:

Specimen retention time is determined by the policy of the reference laboratory. Contact the Send Outs Laboratory with any questions.

Laboratory

Sent to Quest Diagnostics, Wood Dale, IL.

Performed

Tuesday, Thursday.
Results available in 3-8 days.

Reference Range

5.1-11.9 nmol/mL/min

Test Methodology

Colorimetric (C), Enzymatic

CPT Codes

82261

Contacts

Last Updated

12/17/2025