1st order laboratory parameters – obligatory laboratory tests.
- Small blood count [leukocytosis: > 10-12,000/μl]
- Differential blood count
- Inflammatory parameters – CRP (C-reactive protein) [diverticulitis: CRP > 5 mg/100 ml; suspected perforation CRP > 20 mg/100 ml]Note: Inflammatory values often become conspicuous only within 1-2 days.
- Urine status (rapid test for: pH, leukocytes, nitrite, protein, glucose, ketone, urobilinogen, bilirubin, blood), sediment, if necessary urine culture (pathogen detection and resistogram, that is, testing of suitable antibiotics for sensitivity/resistance) – to exclude differential diagnoses on the part of the urinary tract system (eg. E.g. cystitis / cystitis, ureterolithiasis / ureteral stones) or complications of diverticulitis (sigmoid fistula, accompanying cystitis).
Laboratory parameters 2nd order – depending on the results of the history, physical examination, etc. – for differential diagnostic clarification.
- Calprotectin (in stool)Note: Calprotectin should rather not be used routinely for differential diagnosis.
- LPS (lipopolysaccharide-binding protein)-early elevated in stenosing diverticulitis (DD: bacterial gastroenteritis).
