Testosterone Suspension 100mg/mL Injectable | 10-Vial Kit

Testosterone Suspension 100mg/mL — unesterified aqueous testosterone, immediate-onset, 10-vial kit. ≥99% HPLC purity, MS confirmed, Janoshik COA. Research use only.

✓ 99%+ Purity ✓ COA Available
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$240

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SKU: QSC-TESTOSTERONE-SUS-100MG-ML-10VIAL
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QSC RESEARCH GRADE

≥99% HPLC PurityMS ConfirmedJanoshik COAIn-House Synthesis1-Region Domestic Shipping

What is Testosterone Suspension?

Testosterone Suspension (Unesterified aqueous testosterone suspension (injectable)) is pure testosterone — C₁₉H₂₈O₂, MW 288.4 — without any ester modification, suspended in aqueous vehicle. Unesterified testosterone has the fastest onset of any injectable testosterone form (peak ~2–4h, active ~24–48h). Directly available for immediate AR activation without ester hydrolysis step. Fully aromatises to oestradiol via CYP19A1.

Research Applications

Immediate Androgen Delivery

No ester hydrolysis required — fastest-acting injectable testosterone for acute AR activation studies

Androgen Receptor Biology

Direct unmodified testosterone AR binding and nuclear signalling

Pharmacokinetic Reference

Pure testosterone PK reference compound for ester comparison studies

Aromatisation Research

Complete CYP19A1 aromatisation — rapid oestradiol elevation studies

HPG Axis Feedback

Rapid onset suppression of hypothalamic-pituitary-gonadal axis

Quick Specs

Form Aqueous suspension (unesterified)
Concentration 100mg/mL
CAS 58-22-0
Molecular Formula C₁₉H₂₈O₂
MW 288.4 Da
Purity ≥99% by HPLC — every batch
Identity MS molecular weight confirmed — every batch
COA Janoshik-independent, publicly verifiable
Vehicle Aqueous vehicle — shake well before use
Aromatisation Full — converts to oestradiol via CYP19A1
Storage 2–8°C | Do not freeze
Shelf Life 24 months (unopened)

Certificate of Analysis (COA)

For the latest Certificate of Analysis (COA), please email us with your request.

Frequently Asked Questions

How is QSC Testosterone supplied?
QSC Testosterone esters are supplied as ready-to-use oil-based injectable solutions — no reconstitution required. Each vial contains the stated concentration in pharmaceutical-grade carrier oil. Warm the vial briefly in your hand before drawing.
How should injectable Testosterone be stored?
Store at room temperature (15–25°C), away from direct sunlight. Oil-based testosterone solutions are stable for 2–3 years properly stored. Do not refrigerate as this can cause crystallisation of the ester in the oil.
What purity is QSC Testosterone and how is it verified?
QSC Testosterone injectable solutions are ≥99% HPLC pure with MS-confirmed identity on every batch. COA is published on the product page and independently verifiable at verify.janoshik.com.
🧪 Peptide Research Tools: Use QSC’s free peptide calculators — reconstitution, BAC water, dosing, half-life, and mixing charts.
🌍 Domestic shipping: 🇺🇸 USA
🧬 PubMed Research — Suspension
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44,653 publications found Last 10 years 3 most recent shown

Showing 3 of 44,653 for Suspension

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Source: PubMed / NCBI  ·  Last 10 years  ·  Refreshed every 24 hours  ·  For research reference only — not clinical guidance.

⚠️ RESEARCH USE ONLY — NOT FOR HUMAN CONSUMPTION

QSC products are strictly for in vitro and in vivo laboratory research. Not intended for diagnostic, therapeutic, or personal use.

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Research Use Disclaimer

All QSC products are strictly for laboratory, scientific, and research use only. They are not for human consumption, medical treatment, diagnosis, or disease prevention.

By purchasing or using QSC products, you confirm:

  • You are a qualified researcher or acting under the supervision of one.
  • Products will only be used for legitimate research purposes.
  • Products are not evaluated by the FDA or any regulatory authority for human use.
  • You assume all responsibility for legal compliance, proper handling, and storage.
  • You meet the legal age requirement in your jurisdiction.
No Warranty: Products are sold “as is,” with no express or implied warranties regarding efficacy, safety, or suitability. Results in research may vary. QSC is not responsible for outcomes, interpretations, or conclusions drawn from any studies conducted using these products.
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General Safety & Handling

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Not for Human Use

These compounds are for research only. Any off-label, personal, or clinical use is strictly outside the intended scope of supply.

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PPE Required

Always use appropriate personal protective equipment (gloves, lab coat, eye protection) when handling peptides.

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Storage Compliance

Follow product-specific storage conditions to maintain identity, purity, and biological activity.

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Proper Disposal

Dispose of all materials in accordance with institutional biosafety, chemical waste, and hazardous material protocols.

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Verify Quality

Janoshik COAs are available on every product page. Verify batch identity (MS confirmed) and purity (≥99% HPLC) before use.

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Peptide Storage Guidelines

🌑 Light-protected💧 Low moisture🌡️ Stable temperature🔬 Sterile handling

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