CD4 and germ cell tumor: By contrast, in another previous study conducted by Goodarzi and Van Herle on hCG and hyperthyroxinaemia in 17 male patients with germ cell tumours aged 16–50 years, a highly significant correlation of serum β-hCG levels between 200,000 and 3.06 million U/L with total T4 was observed (r = 0.76; P = 0.0068) (25).