Skip to main content
. 2021 Apr 20;22:292. doi: 10.1186/s13063-021-05224-6

Table 2.

Laboratory measurements, equipment, and normal range

Test Test equipment Company Quality control Normal range
Hs-CRP Biochemical auto analyzer Pars azmoon

Intra-assay CV: 2.2%

Inter-assay CV: 1.1%

Linearity (R2): 0.99

Detection limit: 0.1 mg/lit

Children: up 2.8 mg/L

Adult: up to 5 mg/L

IL-6 ELISA kit Demeditec

Intra assay CV: 4.2%

Inter assay CV: 4.9%

Accuracy: 99%

Specificity: 94%

Detection limit: 2 pg/ml

Up to 1.8 pg/ml
IL-10 ELISA kit pars gene (Invitrogen)

Intra assay CV < 3%

Inter assay CV < 8%

Detection limit:2 pg/ml

1.2–7.8 pg/ml
Calprotectin ELISA kit EUROIMMUN

Intra assay CV: 3.4%

Inter assay CV: 6.4%

Linearity(R2): 0.99

Sensitivity: 94.1%

Specificity: 95.5%

Detection limit:1.9 μg/g

50–120 μg/g: borderline

> 120 μg/g: positive

Nasopharyngeal swab URT-S&C (gram-positive, gram negative, pseudomonas) Variable Culture: negative WBC count: up to 2–3