References
- Hohnadel D C, Sunderman F W, Terhune P, Reid F H, Pomper I H. Comparisons of the precision of replicate analyses of frozen and lyophilized quality control serum. Ann Clin Lab Sci 1973; 3: 335–40
- Jansen A P. Reliability of control sera. Ann Clin Biochem 1980; 17: 69–73
- Bowers G N, Jr, Burnett R W, McComb R B. Preparation and use of human serum control materials for monitoring precision in clinical chemistry. Clin Chem 1975; 21: 1830–6
- Uldall A. Preparation of frozen reference sera and examples of applications. Scand J Clin Lab Invest 1984; 44: 223–9
- Dibbelt L, Kuss E. A case of falsely high values for serum estradiol by direct assay. Clin Chem 1984; 30: 591
- Brojer B, Moss D W. Changes in the alkaline phosphatase activity of scrum samples after thawing and after reconstitution from the lyophilized state. Clin Chim Acta 1971; 35: 511–13