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Table 3 Clinical biochemistry results, comparison intervals and out of range (OOR) values

From: Biochemistry reference intervals for healthy elderly population in Asmara, Eritrea

Analyte Units Eritrea screened cohort Eritrean Ministry of Health Out of range (OOR) Middle belt of Ghana [7] Botswana TFD2 screened cohort [11] US Massachusetts General Hospital [12] Combined study (eastern and southern Africa [8])
Aspartate aminotransferase (ASP) U/L 13.8–33.2 0–31 6.8 7–51 13.0–42.0 0–35 14–60
Alanine aminotransferase (ALT) U/L 9–35.4 0–31 5.6 14–51 7.0–46.0 0–35 8–61
Alkaline phosphatase (ALP) U/L 55.4–156 39–117 18.4 84–241 30–120 48–164
Creatinine (Cre) mg/dL 0.6–1.5 0.5–1.1 15.5 0.5–1.1 0–1.33
Blood urea nitrogen (BUN) mg/dL 7.1–22.0 6–20 6.2   5.0–21.0 10–20
Total bilirubin (TBIL) mg/dL 0.4–1.3 0.0–1.0 12.0 0.3–2.6 0.2–1.8 0.3–1.0 0.2–2.2
Direct bilirubin (DBIL) mg/dL 0.1–0.3 0.00–0.3 1.3 0.8–0.4 0.1–0.4 0.1–0.3 0.0–0.5
Total cholesterol (T-Chol) mg/dL 50–357 0–200 25.0  
High density lipoproteins (HDL) mg/dL 31.0–80.0 40–100 22.5  
Sodium (Na) mmol/L 135–147 135–145 4.3 135–150 135–143 136–145
Chloride (Cl) mmol/L 101–113 101–111 10.5 102–114 98.0–107 98–106
Potassium (K) mmol/dL 3.63–5.30 3.6–5.0 5.4 3.6–5.2 3.6–5.2 3.5–5.0
Carbon dioxide (CO2) mmol/L 18–37 21–31 29.5   21–30
Albumin (ALB) g/dL 4–5.30 3.4–4.8 30.6 3.3–5.0
  1. OOR out of order range