procalcitonin SHBG FSH Ghrelin prolactin testosterone Estradiol fetoprotein postprandial glucagon estradiol osteocalcin dehydroepiandrosterone Lincomycin deoxycortisol Frk calcitonin triglyceride leptin PFK1 TSH CPSI calcidiol MTHFR deciliter COHb hormone endorphin dl BDNF nanograms glucose nmol galactokinase phosphogluconate hCG CYP2A6 IGF1 serum