Davis's Lab & Diagnostic Tests

Albumin and Albumin/Globulin Ratio

Albumin and Albumin/Globulin Ratio is a topic covered in the Davis's Lab & Diagnostic Tests.

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Alb, A/G ratio.

Common Use:
To assess liver or kidney function and nutritional status.

Serum collected in a gold-, red-, or red/gray-top tube. Plasma collected in a green-top (heparin) tube is also acceptable.

Normal Findings:
(Method: Spectrophotometry) Normally, the albumin/globulin (A/G) ratio is greater than 1.

AgeConventional UnitsSI Units (Conventional Units × 10)
Cord2.8–4.3 g/dL28–43 g/L
Newborn–7 d2.6–3.6 g/dL26–36 g/L
8–30 d2–4.5 g/dL20–45 g/L
1–3 mo2–4.8 g/dL20–48 g/L
4–6 mo2.1–4.9 g/dL21–49 g/L
7–12 mo2.1–4.7 g/dL21–47 g/L
1–3 yr3.4–4.2 g/dL34–42 g/L
4–6 yr3.5–5.2 g/dL35–52 g/L
7–19 yr3.7–5.6 g/dL37–56 g/L
20–40 yr3.7–5.1 g/dL37–51 g/L
41–60 yr3.4–4.8 g/dL34–48 g/L
61–90 yr3.2–4.6 g/dL32–46 g/L
Greater than 90 yr2.9–4.5 g/dL29–45 g/L

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