1st order laboratory parameters – obligatory laboratory tests.
- Small blood count
- Differential blood count
- Inflammatory parameters – CRP (C-reactive protein) or PCT (procalcitonin).
- HbA1c
- Blood gas analysis (ABG); Note: Interpretation by venous ABG is difficult; arterial ABG is indicated to support the clinical diagnosis of suspicion.
- TSH
- NT-proBNP (N-terminal pro brain natriuretic peptide) – to rule out heart failure (cardiac insufficiency).
- Highly sensitive cardiac troponin T (hs-cTnT) or troponin I (hs-cTnI) – to exclude a myocardial infarction (heart attack).
Laboratory parameters 2nd order – depending on the results of the history, physical examination and the obligatory laboratory parameters – for differential diagnostic clarification.
- Thyroid parameters – TSH
- Pancreatic parameters – amylase, elastase (in serum and stool), lipase.
- Liver parameters – alanine aminotransferase (ALT, GPT), aspartate aminotransferase (AST, GOT), glutamate dehydrogenase (GLDH) and gamma-glutamyl transferase (gamma-GT, GGT), alkaline phosphatase, bilirubin.
- Renal parameters – urea, creatinine, cystatin C or creatinine clearance, if necessary.
