Protein C Activity in Dogs: Adaptation of a Commercial Human Colorimetric Assay and Evaluation of Effects of Storage Time and Temperature

Table 3

Protein C activity results of fresh (control) and stored plasma for Phase 1 (a) and Phase 2 (b). Cross symbols indicate results of comparisons of control and treatment groups, and alphabetical symbols indicate results of comparisons of different treatment groups; results for groups including the same symbols are not significantly different.

(a) Protein C Activity (%, mean ± SD).

Control	4–7 d, −80°C	4–7 d, −80°C; thawed, 2 d, −20°C, send-out	4–7 d, −80°C; thawed, 2 d, −20°C, in-house	4–7 d, −80°C; thawed, 4 d, −80°C	4–7 d, −80°C; thawed, 7 d, −80°C
95 ± 10^†	100 ± 15^†, a,  b,  c	97 ± 14^†, b	102 ± 11^†, a,  b,  c	111 ± 16^‡, c	105 ± 15^‡, a,  b,  c

(b) Protein C Activity (%, mean ± SD).

Control	7 d, −80°C	7 d, −20°C	28 d, −80°C	28 d, −20°C
94 ± 12^†	94 ± 11^†, a	97 ± 11^‡, a	88 ± 10^‡, b	87 ± 10^‡, b