Urine anion gap
| BMP/ELECTROLYTES: | |||
| Na+ = 140 | Cl− = 100 | BUN = 20 | / Glu = 150 \ |
| K+ = 4 | CO2 = 22 | PCr = 1.0 | |
| ARTERIAL BLOOD GAS: | |||
| HCO3− = 24 | paCO2 = 40 | paO2 = 95 | pH = 7.40 |
| ALVEOLAR GAS: | |||
| pACO2 = 36 | pAO2 = 105 | A-a g = 10 | |
| OTHER: | |||
| Ca = 9.5 | Mg2+ = 2.0 | PO4 = 1 | |
| CK = 55 | BE = −0.36 | AG = 16 | |
| SERUM OSMOLARITY/RENAL: | |||
| PMO = 300 | PCO = 295 | POG = 5 | BUN:Cr = 20 |
| URINALYSIS: | |||
| UNa+ = 80 | UCl− = 100 | UAG = 5 | FENa = 0.95 |
| UK+ = 25 | USG = 1.01 | UCr = 60 | UO = 800 |
| PROTEIN/GI/LIVER FUNCTION TESTS: | |||
| LDH = 100 | TP = 7.6 | AST = 25 | TBIL = 0.7 |
| ALP = 71 | Alb = 4.0 | ALT = 40 | BC = 0.5 |
| AST/ALT = 0.6 | BU = 0.2 | ||
| AF alb = 3.0 | SAAG = 1.0 | SOG = 60 | |
| CSF: | |||
| CSF alb = 30 | CSF glu = 60 | CSF/S alb = 7.5 | CSF/S glu = 0.6 |
In clinical chemistry, the urine anion gap is calculated using measured ions found in the urine. It is used to aid in the differential diagnosis of metabolic acidosis.
The term "anion gap" without qualification usually implies serum anion gap. The "urine anion gap" is a different measure, principally used to determine whether the kidneys are capable of appropriately acidifying urine.