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Results 1 - 1 of 1 for GLYCINE OR ISOLEUCINE OR PHENYLALANINE OR THREONINE OR VALINE OR LYSINE OR SERINE OR ARGININE OR ALANINE OR PHOSPHORIC ACID OR LEUCINE OR TRYPTOPHAN OR PROLINE OR METHIONINE OR HISTIDINE OR CYSTEINE
  1. ... The test is performed by administering the amino acid arginine in a vein to raise hGH levels. The ...