Table 2.

Cyst fluid:serum ratios for hormones and serum proteins

IGF-1	Insulin	EPO	GH	Testosterone	T3	APOA1	Albumin	SHBG
0.4 ± 0.2	0.2 ± 0.4	24 ± 32	1.9 ± 1.3	0.9 ± 0.7	1.1 ± 0.7	0.4 ± 0.2	0.9 ± 0.3	0.8 ± 0.4

Cyst fluid and serum from 15 glioblastoma patients were analyzed with respect to hormones and serum proteins. Data are mean ± SD values. Estradiol was not detected in several serum samples and a ratio could therefore not be calculated. Abbreviations: APOA1: apolipoprotein A–I; EPO: erythropoietin; GH: growth hormone; IGF-1: insulin-like growth factor 1; SHBG: sex hormone-binding globulin; T3: triiodothyronine