Laboratory parameters of the 1st order – obligatory laboratory tests.
- Small blood count
- Inflammatory parameters – CRP (C-reactive protein) or ESR (erythrocyte sedimentation rate).
- Urine status (rapid test for: pH, leukocytes, nitrite, protein, glucose, ketone, blood), sediment, if necessary urine culture (pathogen detection and resistogram, that is, testing of suitable antibiotics for sensitivity / resistance).
- Electrolytes – calcium, sodium, potassium.
- Fasting glucose (fasting blood glucose), if necessary oral glucose tolerance test (oGTT).
- HbA1c value (long-term blood glucose value).
- TSH (thyroid stimulating hormone) – if hypothyroidism (underactive thyroid gland) is suspected.
- Renal parameters – urea, creatinine, cystatin C or creatinine clearance if necessary.
- Test for occult (not visible) blood in the stool.
Laboratory parameters 2nd order – depending on the results of the history, physical examination, etc. – for differential diagnostic clarification.
- Liver parameters – alanine aminotransferase (ALT, GPT), aspartate aminotransferase (AST, GOT), glutamate dehydrogenase (GLDH) and gamma-glutamyl transferase (γ-GT, gamma-GT; GGT).
- Lipase
- Lues serology (syphilis; venereal disease).
- Stool tests (calprotectin A and lactoferrin) – if inflammatory bowel disease is suspected.
