| Abbreviations | Meaning |
 | PH | Hydrogen-ion Concentration - Acid / Alkaline |
 | AC-PH | Ac Phos Acid Phosphatase |
 | HGA | Homogentisic Acid |
 | SAM | Sulfated Acid Mucopolysaccharide |
 | HCL | Hydrochloric Acid, Hydrochloride |
 | APG | Acid-precipitated Globulin; Air Plethysmography; Ambulatory Patient Group; Animal Pituitary Gonadotropin; Antegrade Pyelography |
 | PNA | Paris Nomina Anatomica; Peanut Agglutinin; Pentose Nucleic Acid; P-nitroaniline |
 | TARS | Threonyl Transfer Ribonucleic Acid [RNA] Synthetase |
 | PK“ | Apparent Value Of A PK; Negative Logarithm Of The Dissociation Constant Of An Acid |
 | OA | Octanoic Acid |
 | PTA | Phosphotungstic Acid |
 | MORAC | Mixed Oligonucleotides Primed Amplification Of Complementary Deoxyribonucleic Acid |
 | XA | Xanthurenic Acid; X-ray Analysis |
 | HBABA | Hydroxybenzeneazobenzoic Acid |
 | BAO-MAO | Basal Acid Output To Maximal Acid Output (ratio) |