Scripps Laboratories

Protein Levels in Human Plasma

Plasma ProteinNormal Plasma Range (mg/dl)
Albumin 3,500 - 4,500
Prealbumin (Transthyretin) 10 - 40
α1-Globulins 300 - 600
α1 Acid Glycoprotein (orosomucoid) 55 - 140
Retinol Binding Protein 3 - 6
α-Fetoprotein approx. 0.001
Thyroxine Binding Globulin 1 - 2
Transcortin 3 - 3.5
α2 Globulins (excluding lipoproteins)_________ 400 - 900
Ceruloplasmin 15 - 60
Haptoglobin Type 1-1 100 - 220
Haptoglobin Type 2-1 160 - 300
Haptoglobin Type 2-2 120 - 260
β-Globulins (excluding lipoproteins) 600 - 1,100
Transferrin 200 - 320
Hemopexin 50 - 100
β2 Microglobulin approx. 0.2
C-Reactive Protein < 1
γ-Globulins 700 - 1,500

Technical Info

Protein & Ab Data