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Test Code INSAL Insulin Analogs, Serum


Specimen Required


Patient Preparation:

Fasting: 8 hours, required for human insulin reference values to apply

Supplies: Sarstedt Aliquot Tube, 5 mL (T914)

Collection Container/Tube:

Preferred: Red Top

Acceptable: Serum gel

Submission Container/Tube: Plastic vial

Specimen Volume: 1.5 mL Serum

Collection Instructions: Within 2 hours of collection, centrifuge and aliquot serum into a plastic vial

Additional Information: Human insulin reference values are not applicable to patients who were not fasting for 8 hours or received pharmaceutical/synthetic insulin analogs.


Method Name

Liquid Chromatography Mass Spectrometry, High-Resolution Accurate Mass-Mass Spectrometry (LC-MS HRAM)

Specimen Type

Serum Red

Specimen Minimum Volume

Serum: 0.75 mL

Specimen Stability Information

Specimen Type Temperature Time
Serum Red Frozen 14 days

Reject Due To

Gross hemolysis Reject
Gross lipemia OK
Gross icterus OK

Performing Laboratory

Mayo Clinic Laboratories in Rochester

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.