| Ordering Recommendation: |
For suspected growth hormone deficiency, order Insulin-Like Growth Factor I (0070125) or IGF Binding Protein-3 (0070060).
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| Methodology: |
Quantitative Radioimmunoassay
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| Performed: |
Varies
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| Reported: |
3-9 days
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| Specimen Required: |
Patient Prep: Patient should fast overnight (12 hours) prior to collection.
Collect: Plain red or serum separator tube.
Specimen Preparation: Transfer 1 mL serum to an ARUP Standard Transport Tube. (Min: 0.2 mL)
Storage/Transport Temperature: Refrigerated. Also acceptable: Frozen.
Unacceptable Conditions: Grossly hemolyzed or lipemic specimens.
Stability (collection to initiation of testing): Ambient: Unacceptable; Refrigerated: 1 week; Frozen: 4 weeks
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