Cancer Marker Levels in Human Plasma

Marker__________________________________	_____Normal Levels_____	____Malignant Levels____
CA 15-3	< 30 units/ml	> 50 units/ml
CA 125	< 35 units/ml	> 35 units/ml
Carcinoembryonic Antigen (CEA) - Nonsmokers	≤ 3 ng/ml	> 5 ng/ml
Carcinoembryonic Antigen (CEA) - Smokers	< 5 ng/ml	> 5 ng/ml
Chorionic Gonadotropin, Beta Subunit (β-hCG)	< 5 mIU/ml	varies
α-Fetoprotein (AFP)	< 10 ng/ml	> 15 ng/ml
β2-Microglobulin	< 2.5 ng/ml	> 3.3 ng/ml
Neuron Specific Enolase (NSE)	< 12.5 ng/ml	> 25 ng/ml
Prostate Specific Antigen (PSA)	< 2.5 ng/ml	> 4 ng/ml
Prostatic Acid Phosphatase (PAP)	< 3 ng/ml	> 10 ng/ml