AFP and neoplasm of testis: However, the testicular tumor marker serum alpha-fetoprotein (AFP) was 2.2 ng/mL (normal reference value 0–20 ng/mL), β-human chorionic gonadotropin (β-HCG) was 0.6 mIU/mL (normal reference value 0.5–2.67 mIU/mL), and lactate dehydrogenase (LDH) was 136.3 IU/L (normal reference value 120–250 IU/L).