i'm posting this here because there are a lot of members on trt. according to some studies i just found we've been injecting IM when we could have gotten the same result from sc. i showed these studies to my doc and he gave me the go ahead to switch to sc injections. my problem was i was taking 100mg 2x/week IM and it was causing a lot of scar tissue. i rotated deltoid, ventrogluteal, vastus lateralus, rectus femoris but i still noticed the scar tissue. its just the way it is. you stick a pin in your muscle and its going to cause damage and scar. its not good. so check these out. even you guys that run cycles could benefit from this. absorption seems to be the same. i switched to .28ml QOD(200mg/ml test cyp) and i add my hcg in the same pin(29g 1/2" insulin... there are some minor set backs. it takes about 2 minutes to load the dose with a 29g pin. there is a slight burn for a few minutes from the ba in the oil. its a nuisance at best... another benefit. if i was to get an abscess(never had a problem but its always a possibility) doing sc it wouldn't be in my muscle.
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1: Saudi Med J. 2006 Dec;27(12):1843-6.Links
Subcutaneous administration of testosterone. A pilot study report.
Al-Futaisi AM, Al-Zakwani IS, Almahrezi AM, Morris D.
Department of Medicine, College of Medicine & Health Sciences, Sultan Qaboos University, Muscat, Oman.
[email protected]
OBJECTIVE: To investigate the effect of low doses of subcutaneous testosterone in hypogonadal men since the intramuscular route, which is the most widely used form of testosterone replacement therapy, is inconvenient to many patients. METHODS: All men with primary and secondary hypogonadism attending the reproductive endocrine clinic at Royal Victoria Hospital, Monteral, Quebec, Canada, were invited to participate in the study. Subjects were enrolled from January 2002 till December 2002. Patients were asked to self-administer weekly low doses of testosterone enanthate using 0.5 ml insulin syringe. RESULTS: A total of 22 patients were enrolled in the study. The mean trough was 14.48 +/- 3.14 nmol/L and peak total testosterone was 21.65 +/- 7.32 nmol/L. For the free testosterone the average trough was 59.94 +/- 20.60 pmol/L and the peak was 85.17 +/- 32.88 pmol/L. All of the patients delivered testosterone with ease and no local reactions were reported. CONCLUSION: Therapy with weekly subcutaneous testosterone produced serum levels that were within the normal range in 100% of patients for both peak and trough levels. This is the first report, which demonstrated the efficacy of delivering weekly testosterone using this cheap, safe, and less painful subcutaneous route.
PMID: 17143361 [PubMed - indexed for MEDLINE]
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STABLE TESTOSTERONE LEVELS ACHIEVED
WITH SUBCUTANEOUS TESTOSTERONE
INJECTIONS
M.B. Greenspan, C.M. Chang
Division of Urology, Department of Surgery, McMaster University,
Hamilton, ON, Canada
Objectives: The preferred technique of androgen replacement
has been intramuscular (IM) testosterone, but wide
variations in testosterone levels are often seen. Subcutaneous
(SC) testosterone injection is a novel approach; however,
its physiological effects are unclear. We therefore investigated
the sustainability of stable testosterone levels using
SC therapy. Patients and methods: Between May and
September 2005, we conducted a small pilot study involving
10 male patients with symptomatic late-onset hypogonadism.
Every patient had been stable on TE 200 mg IM for
41 year. Patients were instructed to self-inject with
testosterone enanthate (TE) 100 mg SC (DELATESTRYL
200 mg/cc, Theramed Corp, Canada) into the anterior
abdomen once weekly. Some patients were down-titrated
to 50 mg based on their total testosterone (T) at 4 weeks.
Informed consent was obtained as SC testosterone administration
is not officially approved by Health Canada. T
levels were measured before and 24 hours after injection
during weeks 1, 2, 3, and 4, and 96 hours after injection
in week 6 and 8. At week 12, PSA, CBC, and T levels
were measured however; the week 12 data are still being
collected. Results: Prior to initiation of SC therapy, T
was 19.14+3.48 nmol/l, hemoglobin 15.8+1.3 g/dl, hematocrit
0.47+0.02, and PSA 1.05+0.65 ng/ml. During
the first 4 weeks, there was a steady increase in
pre-injection T from 19.14+3.48 to 23.89+9.15 nmol/l
(p¼0.1). However, after 8 weeks the post-injection T
(25.77+7.67 nmol/l) remained similar to that of week 1
(27.46+12.91 nmol/l). Patients tolerated this therapy with
no adverse effects. Conclusions: A once-week SC injection
of 50–100 mg of TE appears to achieve sustainable and
stable levels of physiological T. This technique offers
fewer physician visits and the use of smaller quantity of
medication, thus lower costs. However, the long term
clinical and physiological effects of this therapy need further
evaluation.
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