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Lab Dept:
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Chemistry
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Test Name:
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IGFBP-3
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General Information
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Lab Order Codes:
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IGF3
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Synonyms:
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IGF Binding Protein-3, Insulin-like Growth Factor Binding Protein-3; IGF1BP-3; GHBP3; IGFBP3
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CPT Codes:
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83519 - Immunoassay, analyte, quantitative; by radiopharmaceutical technique
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Test Includes:
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IGF Binding Protein-3 reported in mg/dL.
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Logistics
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Test Indications:
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N/A
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Lab Testing Sections:
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Chemistry - Sendouts
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Referred to:
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Esoterix, Inc (Test# 500281)
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Phone Numbers:
Minneapolis:
Saint Paul:
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612-813-6280
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651-220-6550
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Test Availability:
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Daily, 24 hours
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Turnaround Time:
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3 - 7 days, test set up Monday - Saturday
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Special Instructions:
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N/A
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Specimen
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Specimen Type:
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Blood
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Container:
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Red top tube
Alternate tube: Lavender top (EDTA) tube
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Draw Volume:
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3 mL (Minimum: 0.3mL) blood
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Processed Volume:
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1 mL (Minimum: 0.1 mL) serum/EDTA plasma
Note: Minimum does not permit repeat analysis.
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Collection:
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Routine venipuncture
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Special Processing:
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Lab Staff: Centrifuge specimen within 1 hour of draw, remove serum/plasma aliquot into a screw-capped round bottom plastic vial. Store and ship at frozen temperatures. Forward promptly.
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Patient Preparation:
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None
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Sample Rejection:
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Mislabeled or unlabeled specimens
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Interpretive
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Reference Range:
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Newborns and Infants:
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Term (mg/L)
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Preterm (mg/L)
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Birth
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0.4 – 1.7
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0.3 – 1.4
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2 months
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0.5 – 2.1
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0.9 – 2.3
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4 months
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0.6 – 2.4
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0.4 – 2.2
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6 months
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0.5 – 2.4
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1.0 – 2.3
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12 months
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0.8 – 3.0
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1.0 – 2.8
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Children:
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Range (mg/L)
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1 – 5 years
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1.4 – 3.0
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5 – 7 years
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1.5 – 3.4
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7 – 9 years
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2.1 – 4.2
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9 – 11 years
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2.0 – 4.8
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11- 13 years
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2.1 – 6.2
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13 – 15 years
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2.2 – 5.9
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15 – 18 years
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2.5 – 4.8
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Adults:
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Range (mg/L)
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20 – 30 years
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2.0 – 4.2
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30 – 70 years
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1.9 – 3.6
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Critical Values:
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N/A
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Limitations:
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N/A
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Methodology:
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Radioimmunoassay (RIA) in dilute serum
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References:
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Esoterix Laboratory Services Web Page July 2012
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