Skip to main content

Table 3 Analyte stability in three rat and three human serum samples in ten freeze-thaw cyclesa

From: Assessment of proteolytic degradation of the basement membrane: a fragment of type IV collagen as a biochemical marker for liver fibrosis

Analyte stability Percentage recovery compared to 1 × freeze-thaw cycle
Freeze-thaw cycles Human CO4-MMP Rat CO4-MMP
2 × 109.9 81.6
3 × 75.4 88.9
4 × 95.6 101.8
5 × 113.1 85.3
6 × 92.2 71.1
7 × 122.6 92.1
8 × 131.0 83.6
9 × 104.3 91.0
10 × 90.9 96.6
  1. aAll data shown are percentage recovery compared to day 0 or day 1 freeze-thaw cycle.