Effects of Testosterone Enanthate on Hematological Parameters
Clinical Endocrinology (2014)
Demonstrated dose-dependent increases in hemoglobin and hematocrit, underscoring need for regular CBC monitoring.
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"Over time, I found it incredibly difficult to get medical oversight for myself and my family that reflected the latest research, and that was preventative. That's why I started Marek Health."
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What we test
Every client's lab panel is hand-selected from 1,000+ available biomarkers, built around their specific goals.
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Treatments
700+ medical provider-prescribed therapies built from your labs. Browse by category or explore the full formulary.
Testosterone Enanthate
Injectable (IM/SubQ), sesame oil baseAvailable in all 50 statesMarketing purposes only. Actual medications, if prescribed, are dispensed by a licensed pharmacy.
hormones
Testosterone EnanthateTestosterone Enanthate
Testosterone enanthate is a long-acting esterified testosterone with a half-life of approximately 4 to 5 days, slightly shorter than cypionate. Widely used globally for male hypogonadism and TRT. At Marek, protocols favor daily or three-times-weekly subcutaneous microdosing for stable levels, optimal, not convenient.
Clinically interchangeable with testosterone cypionate
Stable levels via daily or TIW microdosing protocols
Improves lean mass, strength, and body composition
Widely available and cost-effective
No commitment · HSA/FSA eligibleNo commitment · HSA/FSA eligible
How it works
Mechanism of action
The enanthate ester is cleaved by tissue esterases, releasing free testosterone that binds androgen receptors. Undergoes aromatization to estradiol and 5-alpha reduction to DHT. Enanthate's half-life technically permits weekly injections, but Marek protocols default to daily or three-times-weekly (TIW) subcutaneous microdoses to minimize peak-to-trough swings in testosterone and estradiol. Dose, frequency, and route are individualized using your labs and, where useful, Androgen Sensitivity Genetic Testing (AR CAG repeat length), so your provider can calibrate the protocol to your receptor biology, not just your serum blood level.
The baseline panel.
Every Marek client receives this baseline panel before a provider review. Your provider may add additional biomarkers based on your health history, symptoms, and goals, pulling from 1,000+ available markers. See more biomarkers →
Hormone Profile
12 markers
Sex hormones
- Total TestosteroneLC/MS
- Free TestosteroneEquilibrium Dialysis
- Estradiol, Sensitive / UltrasensitiveLC/MS
- Sex Hormone Binding Globulin (SHBG)
- ProgesteroneLC/MSFemale panel
- Prolactin
- Luteinizing Hormone (LH)
- Follicle-Stimulating Hormone (FSH)
- hCG, Total, QuantitativeFemale panel, pre-menopause
Adrenals & neurosteroids
- Cortisol
- DHEA-S
Growth hormone / IGF-1
- Insulin-Like Growth Factor I (IGF-1)
Thyroid Status
3 markers
Thyroid hormones
- Thyroid Stimulating Hormone (TSH)
- Free T4
- Free T3
Heart Health
9 markers
Cardiovascular health
- Total Cholesterol
- HDL Cholesterol
- LDL Cholesterol
- LDL:HDL Ratio
- VLDL Cholesterol
- Triglycerides
- Apolipoprotein-B (ApoB)
- C-Reactive Protein, High Sensitivity (hsCRP)
- Lipoprotein(a) (Lp(a))
Metabolism
3 markers
Insulin sensitivity
- Blood Glucose
- Fasting Insulin
- HbA1c
Organ Function
26 markers
Liver & pancreas
- AST
- ALT
- Bilirubin, Total
- γ-Glutamyl Transferase (GGT)
Kidney function
- BUN
- Creatinine w/ eGFR
Comprehensive Metabolic Panel (CMP)
- Glucose
- Blood Urea Nitrogen (BUN)
- Creatinine
- eGFR
- BUN/Creatinine Ratio
- Sodium
- Potassium
- Chloride
- Carbon Dioxide, Total
- Calcium
- Protein, Total
- Albumin
- Globulin, Total
- Albumin/Globulin (A/G) Ratio
- Alkaline Phosphatase (ALP)
- AST
- ALT
Prostate health
- Prostate-Specific Antigen (PSA)Male panel
- Free PSAMale panel
- % Free PSAMale panel
Nutrient Status
31 markers
Vitamins & minerals
- Vitamin D, 25-OHD (25-Hydroxy)
- Magnesium, RBC
Iron status
- Iron
- Iron Saturation
- TIBC
- UIBC
- Ferritin
Complete Blood Count (CBC)
- White Blood Count (WBC)
- Red Blood Count (RBC)
- Hemoglobin (Hgb)
- Hematocrit (HCT)
- MCV
- MCH
- MCHC
- Red Cell Distribution Width (RDW)
- Platelets
- Neutrophils
- Neutrophils (Absolute)
- Lymphocytes
- Lymphocytes (Absolute)
- Neutrophil/Lymphocyte Ratio
- Monocytes
- Monocytes (Absolute)
- Eosinophils
- Eosinophils (Absolute)
- Basophils
- Basophils (Absolute)
- Immature Cells
- Immature Granulocytes
- Immature Granulocytes (Absolute)
- NRBC, w/ Reflex for Immature Cells
Clinical evidence
The research behind Testosterone Enanthate.
Pharmacokinetics of Testosterone Enanthate
European Journal of Drug Metabolism and Pharmacokinetics (2019)
Weekly subcutaneous dosing achieves more stable serum levels with smaller peak-to-trough variation compared to biweekly IM dosing.
Safety profile
Monitoring & safety information.
Commonly reported side effects
- Injection site reactions
- Erythrocytosis
- Acne
- Androgenic alopecia
- Testicular atrophy
Less common but serious risks
- Thrombotic events secondary to polycythemia
- Exacerbation of sleep apnea
- Infertility from gonadotropin suppression
Generally not appropriate for
- Prostate or male breast cancer
- Pregnancy
- Hematocrit >54%
- Hypersensitivity to sesame oil
Typical monitoring
- Total and free testosterone
- Estradiol
- Hematocrit/CBC
- PSA
- Lipid panel
- Blood pressure
FAQ
Quick answers.
Testosterone enanthate is a long-acting esterified testosterone with a half-life of approximately 4 to 5 days, slightly shorter than cypionate. Widely used globally for male hypogonadism and TRT. At Marek, protocols favor daily or three-times-weekly subcutaneous microdosing for stable levels. Optimal, not convenient.
Clinically interchangeable with testosterone cypionate. Stable levels via daily or TIW microdosing protocols. Improves lean mass, strength, and body composition. Widely available and cost-effective.
Common side effects include: injection site reactions, erythrocytosis, acne, androgenic alopecia, testicular atrophy. Most side effects are dose-dependent and may resolve with continued use or dose adjustment.
Testosterone enanthate is a long-acting esterified testosterone with a half-life of approximately 4 to 5 days, slightly shorter than cypionate. Widely used globally for male hypogonadism and TRT. At Marek, protocols favor daily or three-times-weekly subcutaneous microdosing for stable levels. Optimal, not convenient.
Treatments are dependent on licensed clinical prescription. Client costs vary based on individual labs and panel in treatments and services.