IGF-1 (INSULIN-LIKE GROWTH FACTOR 1) with Z-SCORE
Test Code: LAB9918
CPT Code: 84305
Interface Code
SOMATC
Synonym
IGF-1, SOMATOMEDIN C, Z-Score, INSULIN-LIKE GROWTH FACTOR 1, INSULIN, Z-Score, z-score, z score
Specimen Type
Serum
Specimen Container
Gold top (SST) or Red top tube
Specimen Handling
Allow specimen to clot for at least 30 minutes before centrifugation. Centrifuge within 2 hours of collection. If a red top tube is used: Centrifuge and transfer serum using a disposable pipette into a transport tube, cap and label.
Volume
2.0 mL
Minimum Volume
1.0 mL
Temperature
Refrigerate
Unacceptable Conditions
Specimen submitted at room temperature.
Methodology
Immunoassay
Additional Information
Insulin-like growth factor-1 (IGF-1) is a hormone that, along with growth hormone (GH), helps promote normal bone and tissue growth and development. Measuring IGF-1 is useful in assessing and managing growth-related disorders.
A Z-score is the number of standard deviations a given result is above (positive score) or below (negative score) specific to the age and sex adjusted population mean. Results that are within the IGF-1 reference interval will have a Z-score between -2.0 and + 2.0.
In order to calculate the Z-score, both patient age and sex are required on the test order.
A Z-score is the number of standard deviations a given result is above (positive score) or below (negative score) specific to the age and sex adjusted population mean. Results that are within the IGF-1 reference interval will have a Z-score between -2.0 and + 2.0.
In order to calculate the Z-score, both patient age and sex are required on the test order.
Stability
Room temperature: 8 hours
Refrigerated: 24 hours
Frozen: 12 months
Refrigerated: 24 hours
Frozen: 12 months
Reference Range Information
Reference values are dependent upon methodology/instrumentation, check final report for current reference values
Turn Around Time
24 hours
Performing Site
Pacific Diagnostic Laboratories
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