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