Read below my friend

I would assume the same would apply to AAS.
Pharmacodynamics and pharmacokinetics after subcutaneous and intramuscular injection of human chorionic gonadotropin.
Fertil Steril. 1991 Aug;56(2):225-9.
Saal W, Glowania HJ, Hengst W, Happ J.
Bundeswehrzentralkrankenhaus, Koblenz, Germany.
OBJECTIVE: The pharmacokinetics and efficiency of human chorionic gonadotropin (hCG) after subcutaneous (SC) injection was to clarify in comparison with the intramuscular (IM) mode of administration. DESIGN: In a prospective study, the pharmacokinetics of hCG and the response of serum testosterone (T), luteinizing hormone (LH), and follicle-stimulating hormone (FSH) after an IM and SC injection of 5,000 IU hCG were evaluated up to 144 hours in two randomized groups. SETTING: The study was carried out in a clinical dermatology department providing tertiary care. PARTICIPANTS: Twenty-four healthy male volunteers with a mean age of 22.7 +/- 4.3 years were divided into two groups. INTERVENTIONS: Human chorionic gonadotropin (5,000 IU) was injected IM or SC. MAIN OUTCOME MEASURE: Serum concentration of /b-hCG, T, LH, and FSH were evaluated after IM and SC administration of hCG. Differences between the two groups were determined by t-test. RESULTS:
Compared with [intramuscular] administration of hCG, peak serum drug concentration was significantly delayed (P = 0.01) and serum half-life was prolonged (P = 0.01) after [subcutaneous] injection; however, [testosterone], LH, and FSH responses were identical. CONCLUSIONS: Subcutaneous application of 5,000 IU hCG is as effective as [intramuscular] administration in terms of [testosterone production].
PMID: 1712735 [PubMed - indexed for MEDLINE]