Interesting data!

[CFM]

Testosterone Formulation​	Dosing Regimen​	(N)​	Rate of Erythrocytosis (>50%)​	Mean. T level (ng/dL) (converted units)​	Reference​

T enanthate and cypionate (short acting IM)​

100–200 mg IM qW​

57​

66.7%​

306 ± 164​

70​

T undecanoate (extended release IM)​

1g q6 wks x3, then 1g q9 wks​

347​

7%​

467 ± 32​

78​

Transdermal (Testim® gel, Androgel® 1.62%)​

50–100 mg T, one to two packets applied to the shoulder area daily (Testim® gel), 20.25–80.1 mg T, two to four pumps applied to the skin daily (Androgel®)​

47​

12.8%​

300 ± 89​

70​

Oral testosterone undecanoate​

N/A​

1343​

0.003% (Hct>52%)​

N/A​

77​

Testosterone pellets​

75 mg crystalline T/pellet implanted with 10–14 pellets q 3–6 months​

74​

35.1%​

268 ± 167​

70​

I for one find it hard to believe 66.7% vs 7% difference "rate" of Erythrocytosis between line 1 and line 2.