| 
   
   |N = 3 for all sample storage conditions, except time = 0 where N = 6
  | Plasma storage Condition | Storage Time  (hour) | % of intended value ± % CV |  
  | 2.5 (ng/mL)  | 750 (ng/mL)  |  
  | --- | 0 | 100.0 ± 7.3  | 100.0 ±1.9  |  
  | 25°C | 6 | 108.3 ± 0.8  | 100.9 ± 3.7  |  
  |  | 24 | 102.9 ± 4.9  | 97.7 ± 1.3  |  
  |  | 72 | 102.8 ± 2.3  | 99.2 ± 3.1  |  
  |  | 6 | 104.3 ± 11.8  | 97.4 ± 1.5  |  
  | 4°C | 24 | 101.4 ± 2.5  | 98.3 ± 1.6  |  
  |  | 72 | 104.2 ± 0.2  | 100.6 ± 0.8  |  
  | Freeze and Thaw 3x | --- | 102.8 ± 2.3  | 97.9 ± 1.1 
 
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