Container/Tube: Serum gel tube
Specimen Volume: 2.5 mL of serum
Transport Temperature: Refrigerated
Collection Instructions: Centrifuge specimens and remove the serum or plasma from the cellular material within 2 hours of collection.
Stability
| Storage | Temperature | Stability |
| Room Temperature | 18-28 °C (64-82 °F) | ≤ 1 day |
| Refrigerated | 2-8 °C (36-46 °F) | ≤ 7 days |
| Frozen | ≤ Negative 18 °C (≤0 °F) | ≤ 4 weeks |
Rate Nephelometry
0-2 months: 250-1,200 mg/dL
3 months-1 year: 286-1,680 mg/dL
2-3 years: 341-1,960 mg/dL
4-18 years: 528-2,190 mg/dL
≥19 years: 751-1,560 mg/dL
Monday through Friday
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