 However, we could not obtain 3 cc of blood from either the left foot or the left arm after multiple attempts, and therefore, we decided that the chance of cure of hyperparathyroidism by removal of this parathyroid adenoma was high enough and the improvement in that chance of cure marginal enough that we would terminate the procedure without monitoring PTH. 
However , we could not obtain 3 cc of blood from either the left foot or the left arm after multiple attempts , and therefore , we decided that the chance of cure of hyperparathyroidism by removal of this parathyroid adenoma was high enough and the improvement in that chance of cure marginal enough that we would terminate the procedure without monitoring PTH .