5-amminolevolinic acid/Porphobilinogen (ALA-PBG) 5-amminolevolinic acid (ALA) ALA Dehydrase Trichloroacetic acid Hippuric acid Phenol Vanilmandelic acid 11 – Oxycorticoids 17 – Ketosteroids 17 – Hydroxycorticoids Fructose Citric acid Glicated hemoglobin, A1 fraction Methemoglobin Carboxyhemoglobin Hydroxyproline |