Under baseline conditions (i.e., the costs of venipuncture and capillary sampling at $6 and $3 per sample respectively) the average cost of screening by the venipuncture, stratification and capillary strategies was $22, $25 and $27 respectively. However, these values were altered by variations in the cost of venipuncture(if it is greater than $10 per sample, stratification strategy is cheaper than venipuncture).