Table 2. Predicted Concentration Versus Expected Concentration for an Independent Batch of Solutions Calibrated Using the Data set Shown in Table 1*.

Expected Concentration (mg/dL)	Average Predicted Value (mg/dL)		Standard Error of Prediction (mg/dL)
500	Mix 1:	523	39.06
	Mix 2:	445
	Mix 3:	468
400	Mix 1:	337	38.50
	Mix 2:	421
	Mix 3:	406
300	Mix 1:	276	17.32
	Mix 2:	300
	Mix 3:	282
200	Mix 1:	205	15.81
	Mix 2:	174
	Mix 3:	193

*Mix 1 and 2 denote separate, unrelated mixtures for each concentration, while Mix 3 is a 1:1 mixture of mixes 1 and 2.