At LabCorp, Insulin is drawn in a Red-top tube or gel-barrier tube, order code 004333.

LabCorp collection requirements

Insulin tube and order code at LabCorp

Primary tube
Red-top tube or gel-barrier tube
Order code
004333
Minimum volume
0.3 mL (Note: This volume does not allow for repeat testing.)

LabCorp verified by: Mandi Boss B Franklin, Jul 16, 2026

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