Insulin Sensitivity Index

Specimen Container

For insulin 1 Gold SST, For glucose
1 Gray (Potassium Oxalate/Sodium Fluoride

Specimen Collection Type

serum and plasma

Minimum Volume To Collect (Ml)

Insulin 0.4 mL, Glucose 0.2 mL

Stability

Ambient Stability: 24 hrs
Refrig Stability: > 7 Days
Frozen Stability: >7 Days

Unacceptable Conditions

Green PST (Lithium Heparin)

Preferred Transportation Temperature

REFRIGERATED

Remarks

Insulin result may be up to 25% lower in icteric and hemolyzed specimens

Performed

Sun-Sat

Reported

Same day

Methodology

Insulin: Chemiluminescent Enzyme Labeled Immunometric Assay
Glucose: Colorimetric

Lab Department

Core

Testing Location

IHC

Synonyms

Insulin Sensitivity

AOE

IsFasting

Misc Instructions

For insulin:
1 Gold (SST) each point in test
Also acceptable, Lavender (K2 EDTA) or Dark Green (Sodium Heparin)
DO NOT USE GRAY (POTASSUIM OXALATE/SODIUM FLUORIDE) FOR INSULIN

For glucose:
1 Gray (Potassium Oxalate/Sodium Fluoride) at each time point
Test at each point: initial fasting, then after glucose dose at 30, 60, 90 and 120 minutes

Unit of Measurement

M/mU/l

CPT Codes

82951
82952
83525

LOINC

93792-0

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