Lab error
Decreased "unmeasured"<unk> s
Hypoalbuminemia
Increased "unmeasured" cations
Hyperkalemia
Hypercalcemia
Hypermagnesemia
Lithium Toxicity
Increased cationic paraprotein
Multiple myeloma
Polyclonal IgG gammopathy
Pseudo
Severe Hypernatremia (>170 meq/L)
True conc of Na is underestimated
Marked hyperlipidemia
Leads to overestimation of plasma Cl conc)
Bromide toxicity (e.g. for myasthenia gravis and some herbal medications)
Assay mistakenly reads Br as Cl
May have negative<unk> 
Elevated serum iodide
Hypoalbuminemia
Hyperkalemia
Hypercalcemia
Hypermagnesemia
Lithium Toxicity
Polyclonal IgG gammopathy
Severe Hypernatremia (>170 meq/L)
True conc of Na is underestimated
Marked hyperlipidemia
Leads to overestimation of plasma Cl conc)
Bromide toxicity (e.g. for myasthenia gravis and some herbal medications)
Assay mistakenly reads Br as Cl
May have negative<unk> 
Elevated serum iodide
True conc of Na is underestimated
Leads to overestimation of plasma Cl conc)
Assay mistakenly reads Br as Cl
May have negative<unk> <unk>  falls by 2.5 meq/L for every 1 g/dL reduction in albumin concentration
Anion gap
Osmolal or Osmolar Gap
Anion Gap and Osmolar Gap 
Humate-P
Chlorine gas
Celsius Fahrenheit Temperature Conversion
Non anion gap acidosis
Dystonic reaction