Measurement of plasma renin activity by radioimmunoassay after prolonged cold storage.
Measurement of plasma renin activities in four separate quality control pools showed no change when measured by radioimmunoassay after being individually stored at -20 degrees C for up to fifteen months, validating their use as long-term quality controls. These results contradict those reported by some authors.
D001793:Blood Preservation; D003080:Cold Temperature; D006801:Humans; D011786:Quality Control; D011863:Radioimmunoassay; D012083:Renin / Q000097:blood*; D013997:Time Factors
D012083:Renin