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Recent Best Controversial

  • StudzPeptides User Review: Fast shipping and excellent customer service
    P PeptideCritic

    This is a vendor review submitted by Reactive3078 on PeptideCritic.com.

    Rating: ⭐⭐⭐⭐⭐ (5/5) · Peptide: Pinealon · Reviewed September 29, 2026


    I had a good experience when ordering from Studz. I forgot to attach my order number to my Zelle payment memo so I sent an email and got a response right away. Shipping was fast and no issues with…

    πŸ“– Read the full review on StudzPeptides' page

    πŸ›’ Shop StudzPeptides


    Discuss this review, share your own experiences, or ask questions about the vendor.

    Please keep discussions respectful and factual.

    Vendor Reviews & Orders review pinealon

  • Discussion: FDA Comes for Compounded Tirzepatide. The RUO Market Says Hi.
    P PeptideCritic

    Discussion thread for the blog post on PeptideCritic.com.

    πŸ“– Read the article: FDA Comes for Compounded Tirzepatide. The RUO Market Says Hi.


    Share your thoughts, ask questions, or continue the conversation below!

    Peptide Discussion

  • Discussion: Costides
    P PeptideCritic

    This is the official discussion thread for a vendor on PeptideCritic.com.

    πŸ“– View the vendor profile: Costides


    Share your experiences with this vendor, ask questions, or add information that might help other community members.

    Please keep discussions respectful and factual.

    Vendor Reviews & Orders

  • Discussion: Costides, Biolumin Labs, and the COAs That Don’t Add Up
    P PeptideCritic

    Discussion thread for the blog post on PeptideCritic.com.

    πŸ“– Read the article: Costides, Biolumin Labs, and the COAs That Don’t Add Up


    Share your thoughts, ask questions, or continue the conversation below!

    Peptide Discussion

  • How to Get Started With Peptides: The Supplies You Actually Need (Video)
    P PeptideCritic

    🎬 Watch on RandyTube: How to Get Started With Peptides: The Supplies You Actually Need (Video)

    A beginner guide to the basic supplies a new peptide researcher actually needs: the simple setup for reconstitution, measuring, clean handling, storage, vials and cartridges, plus optional pen systems, and which popular "must-haves" are mostly unnecessary.


    Comments posted here show up under the video on PeptideCritic.com, and vice versa. Questions about the technique, gear or the math are all welcome.

    RandyTube

  • How to Travel With Peptides: Cold Storage for Flights, Long Hauls & Hotels (Video)
    P PeptideCritic

    How to Travel With Peptides: Cold Storage for Flights, Long Hauls & Hotels (Video)

    🎬 Watch on RandyTube: How to Travel With Peptides: Cold Storage for Flights, Long Hauls & Hotels (Video)

    How we actually travel with peptides: short flights, long hauls and everything in between. This video breaks down real-world cold-storage options, a mobile mini-fridge setup for unreliable hotel fridges (looking at you, Europe), and how to keep retatrutide, tirzepatide, semagl…


    Comments posted here show up under the video on PeptideCritic.com, and vice versa. Questions about the technique, gear or the math are all welcome.

    RandyTube

  • Pens vs Syringes: Which Wastes Less Peptide? Dead Space Compared (Video)
    P PeptideCritic

    Pens vs Syringes: Which Wastes Less Peptide? Dead Space Compared (Video)

    🎬 Watch on RandyTube: Pens vs Syringes: Which Wastes Less Peptide? Dead Space Compared (Video)

    Pens or syringes: which one wastes less of your peptide? This short video compares the dead space in both. A syringe can retain 1–2 IU after the plunger bottoms out, while a pen tip holds under 0.5 IU. Small losses add up with frequent use.


    Comments posted here show up under the video on PeptideCritic.com, and vice versa. Questions about the technique, gear or the math are all welcome.

    RandyTube

  • Cloudy Peptides: Why Acetic Acid Can Make a Vial Look Clear Without Fixing It (Video)
    P PeptideCritic

    Cloudy Peptides: Why Acetic Acid Can Make a Vial Look Clear Without Fixing It (Video)

    🎬 Watch on RandyTube: Cloudy Peptides: Why Acetic Acid Can Make a Vial Look Clear Without Fixing It (Video)

    A cloudy reconstituted peptide can sometimes look clearer after adding a little acetic acid, but a clear vial does not prove the peptide underneath is intact. Using a problematic oxytocin batch, this video shows the clouding, the clumping, and why the "fix" is cosmetic.


    Comments posted here show up under the video on PeptideCritic.com, and vice versa. Questions about the technique, gear or the math are all welcome.

    RandyTube

  • DIY Topical Peptide Serum with GHK-Cu + Snap-8 | Base, Mixing & Clean Handling (Video Tutorial)
    P PeptideCritic

    DIY Topical Peptide Serum with GHK-Cu + Snap-8 | Base, Mixing & Clean Handling (Video Tutorial)

    🎬 Watch on RandyTube: DIY Topical Peptide Serum with GHK-Cu + Snap-8 | Base, Mixing & Clean Handling (Video Tutorial)

    In this video we make a simple topical serum with GHK-Cu and Snap-8 for a fraction of what pre-made serums cost. It covers choosing a base, getting the peptides into it without wrecking them, keeping everything clean, and an optional roller for application. Patch test first.


    Comments posted here show up under the video on PeptideCritic.com, and vice versa. Questions about the technique, gear or the math are all welcome.

    RandyTube

  • V4 Plastique Pen Explained: 60-Unit Delivery, Less Waste & Smarter Dosing (Video)
    P PeptideCritic

    V4 Plastique Pen Explained: 60-Unit Delivery, Less Waste & Smarter Dosing (Video)

    🎬 Watch on RandyTube: V4 Plastique Pen Explained: 60-Unit Delivery, Less Waste & Smarter Dosing (Video)

    Jeff and Randy demonstrate the V4 Plastique, a reusable peptide pen that delivers up to 60 units per dose, leaves substantially less solution behind in the cartridge than the V1 and many other pens, and will not dial past what is actually left. The trade-off is a firmer push,…


    Comments posted here show up under the video on PeptideCritic.com, and vice versa. Questions about the technique, gear or the math are all welcome.

    RandyTube

  • How to Filter Reconstituted Peptides Into a Fresh 3 mL Vial (Video Tutorial)
    P PeptideCritic

    How to Filter Reconstituted Peptides Into a Fresh 3 mL Vial (Video Tutorial)

    🎬 Watch on RandyTube: How to Filter Reconstituted Peptides Into a Fresh 3 mL Vial (Video Tutorial)

    Jeff and Randy show the full workflow for pushing a reconstituted peptide through a 0.22 Β΅m PES syringe filter into a fresh sterile 3 mL vial or pen cartridge: drawing up, attaching the filter, priming it, venting the receiving vial, and what to do with the small amount the fi…


    Comments posted here show up under the video on PeptideCritic.com, and vice versa. Questions about the technique, gear or the math are all welcome.

    RandyTube

  • New Inaccurate Peptide Pens: Why We Refused to Carry Them (Video)
    P PeptideCritic

    New Inaccurate Peptide Pens: Why We Refused to Carry Them (Video)

    🎬 Watch on RandyTube: New Inaccurate Peptide Pens: Why We Refused to Carry Them (Video)

    A new batch of reusable peptide pens landed on our desk for evaluation and failed the one test that matters: what the dial says versus what comes out. They over-delivered, under-delivered, or delivered accurately with no way to know which. Randy explains why we would not sell…


    Comments posted here show up under the video on PeptideCritic.com, and vice versa. Questions about the technique, gear or the math are all welcome.

    RandyTube

  • 90-Day Peptide Degradation Test: Mazdutide, Tirzepatide & MOTS-c Results Explained (Video)
    P PeptideCritic

    90-Day Peptide Degradation Test: Mazdutide, Tirzepatide & MOTS-c Results Explained (Video)

    🎬 Watch on RandyTube: 90-Day Peptide Degradation Test: Mazdutide, Tirzepatide & MOTS-c Results Explained (Video)

    We paid a lab to answer the questions everyone asks: I left it out overnight, is it ruined? How long is a reconstituted peptide good for? Does the fridge really matter? This video walks through the tirzepatide, MOTS-c and mazdutide stability results at refrigerated versus room…


    Comments posted here show up under the video on PeptideCritic.com, and vice versa. Questions about the technique, gear or the math are all welcome.

    RandyTube

  • How to Make a Peptide Nasal Spray (Step-by-Step Guide + Do's & Don'ts)
    P PeptideCritic

    How to Make a Peptide Nasal Spray (Step-by-Step Guide + Do's & Don'ts)

    🎬 Watch on RandyTube: How to Make a Peptide Nasal Spray (Step-by-Step Guide + Do's & Don'ts)

    Learn how to safely prepare a peptide nasal spray at home with this comprehensive step-by-step guide. This tutorial covers proper mixing techniques, sterilization, storage, and important safety considerations.


    Comments posted here show up under the video on PeptideCritic.com, and vice versa. Questions about the technique, gear or the math are all welcome.

    RandyTube

  • Filtering Peptides with a PES Filter | Step-by-Step Guide
    P PeptideCritic

    Filtering Peptides with a PES Filter | Step-by-Step Guide

    🎬 Watch on RandyTube: Filtering Peptides with a PES Filter | Step-by-Step Guide

    Learn how to properly filter reconstituted peptides using a PES (Polyethersulfone) filter to remove particulates and ensure solution purity. This step-by-step guide covers everything from selecting the right filter to proper filtering technique for safe peptide preparation.


    Comments posted here show up under the video on PeptideCritic.com, and vice versa. Questions about the technique, gear or the math are all welcome.

    RandyTube

  • Reconstituting BPC-157 | How to Make a Nasal Spray (Supplies, Math & Step-by-Step Guide)
    P PeptideCritic

    Reconstituting BPC-157 | How to Make a Nasal Spray (Supplies, Math & Step-by-Step Guide)

    🎬 Watch on RandyTube: Reconstituting BPC-157 | How to Make a Nasal Spray (Supplies, Math & Step-by-Step Guide)

    Learn how to properly reconstitute BPC-157 peptide into a convenient nasal spray. This comprehensive tutorial covers all the necessary supplies, mathematical calculations for proper dosing, and step-by-step instructions to safely prepare your BPC-157 nasal spray at home.


    Comments posted here show up under the video on PeptideCritic.com, and vice versa. Questions about the technique, gear or the math are all welcome.

    RandyTube

  • Disposable Peptide Pens | Types & How to Load Them (Step-by-Step Tutorial)
    P PeptideCritic

    Disposable Peptide Pens | Types & How to Load Them (Step-by-Step Tutorial)

    🎬 Watch on RandyTube: Disposable Peptide Pens | Types & How to Load Them (Step-by-Step Tutorial)

    This comprehensive tutorial provides an overview of disposable peptide pens, covering the different types available and their specific features. Learn step-by-step instructions for properly loading these pens, including essential tips for maintaining sterility, handling cartri…


    Comments posted here show up under the video on PeptideCritic.com, and vice versa. Questions about the technique, gear or the math are all welcome.

    RandyTube

  • Discussion: We Left Retatrutide in a Truck All Summer. Then We Tested It.
    P PeptideCritic

    Discussion thread for the blog post on PeptideCritic.com.

    πŸ“– Read the article: We Left Retatrutide in a Truck All Summer. Then We Tested It.


    Share your thoughts, ask questions, or continue the conversation below!

    Peptide Discussion

  • Discussion: New-U Research Compounds
    P PeptideCritic

    This is the official discussion thread for a vendor on PeptideCritic.com.

    πŸ“– View the vendor profile: New-U Research Compounds


    Share your experiences with this vendor, ask questions, or add information that might help other community members.

    Please keep discussions respectful and factual.

    Vendor Reviews & Orders

  • Discussion: Blank Peptides
    P PeptideCritic

    This is the official discussion thread for a vendor on PeptideCritic.com.

    πŸ“– View the vendor profile: Blank Peptides


    Share your experiences with this vendor, ask questions, or add information that might help other community members.

    Please keep discussions respectful and factual.

    Vendor Reviews & Orders
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