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Metabolic Syndrome and Glucose Control Including Insulin
Test Code91398
CPT Codes
82947, 83525, 82465, 84478, 83718
Includes
Glucose
Insulin, Intact, LC/MS/MS
Cholesterol, Total
Triglycerides
HDL and Calculated Components
Insulin, Intact, LC/MS/MS
Cholesterol, Total
Triglycerides
HDL and Calculated Components
Preferred Specimen
3 mL serum collected in a Serum Separator Tube (SST®) and
0.4 mL serum collected in a red-top tube (no gel)
0.4 mL serum collected in a red-top tube (no gel)
Patient Preparation
Patient should fast 9-12 hours prior to collection. The assay manufacturer Beckman Coulter advises: "N-Acetyl Cysteine (NAC), when administered in therapeutic concentrations (for the treatment of acetaminophen overdose), has been...determined to interfere with assays for... Cholesterol, Uric Acid" where "NAC interference may lead to falsely low results." According to Beckman Coulter, the NAC interference should be insignificant by 12 hours after completion of the initial loading dose of an IV infusion treatment regimen consisting of an initial loading dose of 150 mg/kg administered over 1 hr, a second dose of 50 mg/kg administered over 4 hrs and a third dose of 100 mg/kg administered over 16 hrs.
Minimum Volume
1.5 mL serum collected in an SST® and
0.2 mL serum collected in a red-top tube (no gel)
0.2 mL serum collected in a red-top tube (no gel)
Instructions
See individual assays
Transport Temperature
Frozen
Specimen Stability
Serum: Serum Separator Tube (SST®)
Room temperature: 48 hours
Refrigerated: 7 days
Frozen: 15 days
Serum: Red-top tube (no gel)
Room temperature: 24 hours
Refrigerated: 24 hours
Frozen: 28 days
Room temperature: 48 hours
Refrigerated: 7 days
Frozen: 15 days
Serum: Red-top tube (no gel)
Room temperature: 24 hours
Refrigerated: 24 hours
Frozen: 28 days
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Unspun serum or plasma separator tube (SST® or PST) • red-top or green-top tube (serum or; heparinized plasma not
separated from cells) • anticoagulants other than lithium heparin; sodium heparin or fluoride/oxalate • gross hemolysis • gross to moderately icteric
separated from cells) • anticoagulants other than lithium heparin; sodium heparin or fluoride/oxalate • gross hemolysis • gross to moderately icteric
Methodology
Chromatography/Mass Spectrometry • Spectrophotometry (SP)
FDA Status
This test was developed and its analytical performance characteristics have been determined by Quest Diagnostics. It has not been cleared or approved by FDA. This assay has been validated pursuant to the CLIA regulations and is used for clinical purposes.
Setup Schedule
Night Sets up 3 days a week.
Report Available
Reports in 2 days.
Clinical Significance
Identifying patients who have metabolic syndrome and who are thus at higher risk of diabetes, coronary heart disease or stroke. Identifying patients who are insulin resistant (fasting insulin at or above the 75th percentile) and who are thus at higher risk of diabetes, coronary heart disease, stroke, or liver disease. Monitoring of risk factors and insulin levels after life style change, medication use, or both.