Table. 1.

Interpretation guidelines for urine sticks of different manufacturers

Test Company

YD SD Roche Siemens Sysmex Arkray
Blood
Unit RBC/μL RBC/μL RBC/μL RBC/μL mg/dL mg/dL
Grade
- Neg Neg Neg Neg Neg Neg
+- 5 - 10 Trace 0.03 0.03
1+ 10 10 25 Small 0.08 0.06–0.1
2+ 50 50 50 Moderate 0.15 0.2–0.5
3+ 250 250 150 Large 0.75 ≥1.0
4+ NA NA 250 NA NA NA
Leukocyte
Unit WBC/μL WBC/μL WBC/μL WBC/μL WBC/μL WBC/μL
Grade
- Neg Neg Neg Neg Neg Neg
+- NA NA NA Trace NA NA
1+ 25 25 25 Small 25 25
2+ 75 75 100 Moderate 75 75
3+ 500 500 500 Large 500 250
4+ NA NA NA NA NA 500
Nitrite
Unit mg/dL mg/dL mg/dL mg/dL mg/dL mg/dL
Grade
- Neg Neg Neg Neg Neg Neg
1+ P >0.5 P P 0.1 0.08
2+ NA NA NA NA 0.3 0.5
Protein
Unit mg/dL mg/dL mg/dL mg/dL mg/dL mg/dL
Grade
- Neg Neg Neg Neg Neg Neg
+- 10 10 25 Trace 15 10–20
1+ 30 30 75 30 30 30–70
2+ 100 100 150 100 100 100–200
3+ 300 300 500 >300 300 300–600
4+ 1,000 1,000 NA 2,000 1,000 >600
Glucose
Unit mg/dL mg/dL mg/dL mg/dL mg/dL mg/dL
Grade
- Neg Neg Neg Neg Neg Neg
+- 100 100 50 NA 50 30–50
1+ 250 250 100 100 100 70–100
2+ 500 500 300 250 250 150–200
3+ 1,000 1,000 1,000 500 500 300–500
4+ <2,000 2,000 NA <1,000 <2,000 <1,000
Ketone
Unit mg/dL mg/dL mg/dL mg/dL mg/dL mg/dL
Grade
- Neg Neg Neg Neg Neg Neg
+- 5 5 5 5 NA NA
1+ 10 10 15 15 10 10–20
2+ 50 50 50 40 30 40–60
3+ 100 100 150 ≥80 80 80–100
4+ NA NA NA 160 NA >150
Bilirubin
Unit mg/dL mg/dL mg/dL mg/dL mg/dL mg/dL
Grade
- Neg Neg NA NA
+- NA NA NA NA NA NA
1+ 0.5 0.5 1 Small 0.5 0.5–1.0
2+ 1 1 3 Moderate 1 2.0–4.0
3+ 3 3 6 Large 2 6.0–10.0
4+ NA NA NA NA NA >10
Urobilinogen
Unit mg/dL mg/dL mg/dL mg/dL mg/dL mg/dL
Grade
- NA NA Normal 0.2 NA NA
+- 0.1 NA 1 1 NA Normal
1+ 1 1 4 2 2 2–3
2+ 4 4 8 4 4 4–6
3+ 8 8 12 >8 8 8–12
4+ 12 12 NA NA 25 >12

The instruments were from the following companies: YD (YD Diagnostics, Yongin, Korea), SD (Standard Diagnostics, Seoul, Korea), Roche (Roche Diagnostics, Mannheim, Germany), Siemens (Siemens Healthcare, Erlangen, Germany), Sysmex (Sysmex Co., Kobe, Japan), and Arkray (Arkray Inc., Kyoto, Japan).

Abbreviations: RBC, red blood cell; Neg, negative; NA, not available; WBC, white blood cell.

J Lab Med Qual Assur 2020;42:200~210 https://doi.org/10.15263/jlmqa.2020.42.4.200
© Lab Med Qual Assur