Myers GL, Kimberly MM, Waymack PW, Smith SJ, Cooper GR, Sampson EJ. A reference method laboratory network for cholesterol: a model for standardization and improvement of clinical laboratory measurements. Clin Chem 2000;46:1762-72.
Myers GL, Cooper GR, Greenberg N, Kimberly MM, Waymack PP, Hassemer DJ. Standardization of lipid and lipoprotein measurements. In: Rifai N, Warnick GR, Dominiczak MH, eds. Handbook of Lipoprotein Testing, 2nd edition. Washington, DC: AACC 2000:717-48.
Bachorick PS, Ross JW. National Cholesterol Education Program recommendations for measurement of low-density lipoprotein cholesterol: executive summary. Clin Chem 1995;41:1414-20.
Stein EA, Myers GL. National Cholesterol Education Program recommendations for triglyceride measurement: executive summary. Clin Chem 1995;41:1421-6.
Warnick GR, Wood PD. National Cholesterol Education Program recommendations for measurement of high-density lipoprotein cholesterol: executive summary. Clin Chem 1995;41:1427-33.
Cooper GR, Myers GL, Kimberly MM, Waymack PP. The effects of errors in lipid measurement and assessment. Curr Cardiol Rep 2002;4:501-7.
Cooper GR, Myers GL, Smith SJ, Sampson EJ. Standardization of lipid, lipoprotein, and apolipoprotein measurements. Clin Chem 1988;33:B95-105.
Kimberly MM, Myers GL, Little RR. Clinical laboratory reference networks. Accred Qual Assur 2004;9:18-23.
McNamara JR, Leary ET, Ceriotti F, Boersma-Cobbaert CM, Cole TG, Hassemer DJ, et al. Point: status of lipid and lipoprotein standardization. Clin Chem 1997;43:1306-10.
Naito HK. The need for accurate total cholesterol measurement. Recommended analytical goals, current state of reliability, and guidelines for better determinations. Clin Lab Med 1989;9:37-60.
NCCLS. Method comparison and bias estimation using patient samples; approved guideline. NCCLS document EP9-A. Wayne, PA: NCCLS, 1995.
Ross JW, Myers GL, Gilmore BF, Cooper GR, Naito HR, Eckfeldt J. Matrix effects and the accuracy of cholesterol analysis. Arch Pathol Lab Med 1993;117:393-400.
Siekmann L, Doumas BT, Thienpont L, Schumann G. 6 networks of reference laboratories. Eur J Clin Chem Clin Biochem 1995;33:1013-7.
Warnick GR, Myers GL, Cooper GR, Rifai N. Impact of the Third Cholesterol Report from the Adult Treatment Panel of the National Cholesterol Education Program on the Clinical Laboratory. Clin Chem 2002;48:11-7.
Bernert JT, Akins JR, Cooper GR, Poulose AK, Myers GL, Sampson EJ. Factors influencing the accuracy of the National Reference System total cholesterol reference method. Clin Chem 1991;37:2053-61.
Cohen A, Hertz HS, Mandel J, Paule RC, Schaffer R, Sniegoski LT, et al. Total serum cholesterol by isotope dilution-mass spectrometry: a candidate definitive method. Clin Chem 1980;26:854-60.
Cooper GR, Smith SJ, Duncan IW, Mather A, Fellows WD, Foley T, et al. Interlaboratory testing of the transferability of a candidate reference method for total cholesterol in serum. Clin Chem 1986;32:921-9.
Ellerbe P, Myers GL, Cooper GR, Hertz HS, Sniegoski LT, Welch MJ, et al. A comparison of results for cholesterol in human serum obtained by the reference and by the definitive method of the National Reference System for Cholesterol. Clin Chem 1990;36:370-5.
Kimberly MM, Leary ET, Cole TG, Waymack PW. Selection, validation, standardization, and performance of a designated comparison method for HDL-cholesterol for use in the Cholesterol Reference Method Laboratory Network. Clin Chem 1999;45:1803-12.
Modenese A, Carobene A, Ferrero C, Ceriotti F, Franzini C, De Giorgi E, et al. Reference method for serum total cholesterol measurement: does substituting enzymatic step for Liebermann - Burchard reaction improve specificity? Clin Chem 1996;42:475-7.
Cobbaert CM. Luderer TK. Total error evaluation of Roche direct HDL-cholesterol reagent and calibrator across 31 lot combinations: a 2-year experience. Clin Chem 2000;46:133-4.
Cobbaert C, Mulder PGH, Baadenhuijsen H, Zwang L, Weykamp CW, Demacker PNM. Survey of total error of precipitation and homogeneous HDL-cholesterol methods and simultaneous evaluation of lyophilized saccharose-containing candidate reference materials for HDL-cholesterol. Clin Chem 1999;45:360-70.
Cobbaert C, Weykamp C, Baadenhuijsen H, Kuypers A, Lindemans J, Jansen R. Selection, preparation, and characterization of commutable frozen human serum pools as potential secondary reference materials for lipid and apolipoprotein measurements: Study within the framework of the Dutch project "Calibration 2000." Clin Chem 2002;48:1526-38.
Cobbaert C, Zwang L, Ceriotti F, Modenese A, Cremer P, Herrmann W, et al. Reference standardization and triglyceride interference of a new homogeneous HDL-cholesterol assay compared with a former chemical precipitation assay. Clin Chem 1998;44:770-89.
Graziani MS, Ceriotti F, Carobene A, Modenese A, Ferrero C, De Giorgi E, et al. Accuracy of cholesterol measurements in Italian Clinical Laboratories. Joint Project GISSI Prevention - Italian Society of Clinical Biochemistry. Eur J Clin Chem Clin Biochem 1997;35:311-5.
Halloran P, Roetering H, Pisani T, van den Berg B, Cobbaert C. Reference standardization and analytical performance of a liquid homogeneous high-density lipoprotein cholesterol method compared with chemical precipitation method. Arch Pathol Lab Med 1999;123:317-26.
McGuinness C, Seccombe DW, Frohlich JJ, Ehnholm C, Sundvall J, Steiner G for the DAIS Project Group. Laboratory standardization of a large international clinical trial: The DAIS experience. Clin Biochem 2000;33:15-24.
Nakamura M, Sato S, Shimamoto T. Improvement in Japanese clinical laboratory measurements of total cholesterol and HDL-cholesterol by the U.S. Cholesterol Reference Method Laboratory Network. J Atheroscler Thromb 2003;10:145-53.
Nauck M, Graziani MS, Bruton D, Cobbaert C, Cole TG, Lefevre F, et al. Analytical and clinical performance of a detergent-based homogeneous LDL-cholesterol assay: a multicenter evaluation. Clin Chem 2000;46:506-14.
Nauck M, Graziani MS, Jarausch J, Bruton D, Cobbaert C, Cole TG, et al. A new liquid homogeneous assay for HDL cholesterol determination evaluated in seven laboratories in Europe and the United States. Clin Chem Lab Med. 1999;37:1067-76.
Nauck M, Warnick GR, Rifai N. Methods for measurement of LDL-cholesterol: a critical assessment of direct measurement by homogeneous assays versus calculation. Clin Chem 2002;48:236-54.
Packard CJ, Bell MA, Eaton RH, Dagen MM, Cassidy M, Shepherd J. A pilot scheme for improving the accuracy of serum cholesterol measurement in Scotland and Northern Ireland. Ann Clin Biochem 1993;30:387-93.
Rifai N, Cole TG, Iannotti E, Law T, Macke M, Miller R, et al. Assessment of Interlaboratory performance in external proficiency testing programs with a direct HDL-cholesterol assay. Clin Chem 1998;44:1452-8.
Thienpont LM, Van Landuyt KG, Stöckl D, De Leenheer AP. Four frequently used test systems for serum cholesterol evaluated by isotope dilution gas chromatography-mass spectrometry candidate reference method. Clin Chem 1996;42:531-5.
Usui S, Nakamura M, Jitsukata K, Nara M, Hosaki S, Okazaki M. Assessment of between-instrument variations in a HPLC method for serum lipoproteins and its traceability to reference methods for total cholesterol and HDL-cholesterol. Clin Chem 2000;46:63-72.
Warnick GR, Nauck M, Rifai N. Evolution of methods for measurement of HDL-cholesterol: from ultracentrifugation to homogeneous assays. Clin Chem 2001;47:1579-96.
Warnick GR, Spain M, Kloepfer H, Volke TM. Standardization of a commercial (Boehringer Mannheim Diagnostics) enzymic method for cholesterol. Clin Chem 1989;35:409-13.
Zhang DJ, LaRue S, Miller WG, Cole TG. Performance of predispensed reagent and noncentrifugation methods for high-density lipoprotein cholesterol measurement. Arch Pathol Lab Med 1997;121:938-47.
