Email Archive

Research Radar Ep. 1: Payments, Peptides & Proper Testing

Score 0.855 · Account tjphuhs@gmail.com · 4/3/2026, 10:19:48 AM

Research Radar Ep. 1: Payments, Peptides & Proper Testing from derekpruski@substack.com on 2026-04-03T14:19:48.000Z View this post on the web at https://derekpruski.substack.com/p/research-radar-ep-1-payments-peptides Topic 1: Payment processing in the research space One of the most persistent behind-the-scenes headaches for research companies right now is payment processing. Vendors have been cycling through as many as seven different processors trying to find one that’s both reliable and will

Research Radar Ep. 1: Payments, Peptides & Proper Testing

Score 0.828 · Account tjphuhs@gmail.com · 4/3/2026, 10:19:48 AM

Research Radar Ep. 1: Payments, Peptides & Proper Testing from derekpruski@substack.com on 2026-04-03T14:19:48.000Z is a meaningful development. Holding alternative delivery formats to the same documentation standards as injectables raises the bar across the board and gives researchers more confidence when evaluating non-injectable options. Listener Q&A: RFK and the category 1 vs category 2 peptide reclassification Rick walked us through the regulatory background on RFK’s proposed reclassificati

What’s new on peptideprice: payment filters and sterility testing tiers

Score 0.742 · Account tjphuhs@gmail.com · 5/10/2026, 6:08:49 PM

What’s new on peptideprice: payment filters and sterility testing tiers from derekpruski@substack.com on 2026-05-10T22:08:49.000Z — USP 71. This is the gold standard. Two-week growth test. Worth a full point in the testing score. Sterility (PCR / rapid) — DNA-based, hours instead of weeks. Newer technology, but still a real sterility check. Worth half a point. Bioburden (5 Day) — USP 61. This is not a sterility test. It counts microbes but doesn’t prove sterility. Worth half a point. The filters

What’s new on peptideprice: payment filters and sterility testing tiers

Score 0.733 · Account tjphuhs@gmail.com · 5/10/2026, 6:08:49 PM

What’s new on peptideprice: payment filters and sterility testing tiers from derekpruski@substack.com on 2026-05-10T22:08:49.000Z View this post on the web at https://derekpruski.substack.com/p/whats-new-on-peptideprice-payment A weekend of updates to make vendor comparison faster and more accurate. Spent this weekend pushing a round of updates to peptideprice.store [ https://substack.com/redirect/f76f57e4-54d0-49b1-9ca5-4e6208a623c9?j=eyJ1IjoiNGl3b2U2In0.sVDxRtmZ85v8kfdamY0krRXGMy3p768BWtuZifRB

Re: peptide_testing - Sample Submission

Score 0.728 · Account tjphuhs@gmail.com · 2/13/2026, 6:07:10 PM

Re: peptide_testing - Sample Submission from contact@bioregen.com on 2026-02-13T23:07:10.000Z Hi TJ, hank you for reaching out to BioRegen regarding testing services. We’re happy to assist with the testing of the sample. Please find the attached shipping form, which we kindly ask you to include with the samples you send. Our shipping address is listed at the bottom of the form for your convenience. You can also send your submission here: Sample Submission Link<https://reports.bioregen.com/sendsa

Fwd: Waking Up at 2–3am While Researching a GLP-1? Read This.

Score 0.707 · Account tjphuhs@gmail.com · 3/18/2026, 4:18:18 PM

Fwd: Waking Up at 2–3am While Researching a GLP-1? Read This. from tjphuhs@gmail.com on 2026-03-18T20:18:18.000Z overthink it — just make sure there’s enough fuel in the tank before lights out. > As always, this is for research purposes only. All compounds are research use only, not for human consumption. > Drop any questions below — happy to help you troubleshoot. > Upgrade to paid > You're currently a free subscriber to Peptide Price. For the full experience, upgrade your subscription. > Upgra

Mold Toxicity & Peptides: A Comprehensive Walkthrough

Score 0.706 · Account tjphuhs@gmail.com · 4/28/2026, 7:52:08 PM

Mold Toxicity & Peptides: A Comprehensive Walkthrough from derekpruski@substack.com on 2026-04-28T23:52:08.000Z can work. The “arginine salt” version of certain peptides looks similar on a label but doesn’t survive — it’s marketed as “stable” but functionally less effective. Section 5: The Layered Research Framework This is the sequencing that’s emerging from clinical observation. Each layer prepares the system for the next. Skipping ahead causes problems — running offensive peptides before defe

Fwd: New Study Worth Knowing About: GLP-1s and Alzheimer's

Score 0.702 · Account oc.tjphuhs@gmail.com · 4/30/2026, 11:00:22 AM

Fwd: New Study Worth Knowing About: GLP-1s and Alzheimer's from tjphuhs@gmail.com on 2026-04-30T15:00:22.000Z wave of trials needs to recruit at-risk people before symptoms start — that’s where the real test happens. > This is one more data point worth tracking as the field develops. Stay measured, watch the next 2-3 years of trial readouts, and don’t get ahead of the evidence. > Drop questions or thoughts below. > Disclaimer: This content is for research and educational purposes only and is not

Fwd: New Study Worth Knowing About: GLP-1s and Alzheimer's

Score 0.702 · Account tjphuhs@gmail.com · 4/30/2026, 11:00:22 AM

Fwd: New Study Worth Knowing About: GLP-1s and Alzheimer's from tjphuhs@gmail.com on 2026-04-30T15:00:22.000Z wave of trials needs to recruit at-risk people before symptoms start — that’s where the real test happens. > This is one more data point worth tracking as the field develops. Stay measured, watch the next 2-3 years of trial readouts, and don’t get ahead of the evidence. > Drop questions or thoughts below. > Disclaimer: This content is for research and educational purposes only and is not

Fwd: Tesamorelin Degradation Data — We're Getting It After All | Peptide Crafters 3-Month Study | Month 1 Sneak Peek

Score 0.691 · Account tjphuhs@gmail.com · 3/19/2026, 8:53:16 AM

Fwd: Tesamorelin Degradation Data — We're Getting It After All | Peptide Crafters 3-Month Study | Month 1 Sneak Peek from tjphuhs@gmail.com on 2026-03-19T12:53:16.000Z ---------- Forwarded message ---------- From: Derek from Peptide Price <derekpruski@substack.com> Date: Mar 19, 2026 at 8:37 AM -0400 To: tjphuhs@gmail.com Subject: Tesamorelin Degradation Data — We're Getting It After All | Peptide Crafters 3-Month Study | Month 1 Sneak Peek > I know a lot of you were disappointed when our own de

Fwd: Long COVID & Mitochondrial Peptides: What the Research Actually Suggests

Score 0.689 · Account oc.tjphuhs@gmail.com · 3/19/2026, 8:54:05 AM

Fwd: Long COVID & Mitochondrial Peptides: What the Research Actually Suggests from tjphuhs@gmail.com on 2026-03-19T12:54:05.000Z ---------- Forwarded message ---------- From: Derek from Peptide Price <derekpruski@substack.com> Date: Mar 19, 2026 at 7:37 AM -0400 To: tjphuhs@gmail.com Subject: Long COVID & Mitochondrial Peptides: What the Research Actually Suggests > This post is for educational and informational purposes only. > ͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏

Fwd: Long COVID & Mitochondrial Peptides: What the Research Actually Suggests

Score 0.689 · Account tjphuhs@gmail.com · 3/19/2026, 8:54:05 AM

Fwd: Long COVID & Mitochondrial Peptides: What the Research Actually Suggests from tjphuhs@gmail.com on 2026-03-19T12:54:05.000Z ---------- Forwarded message ---------- From: Derek from Peptide Price <derekpruski@substack.com> Date: Mar 19, 2026 at 7:37 AM -0400 To: tjphuhs@gmail.com Subject: Long COVID & Mitochondrial Peptides: What the Research Actually Suggests > This post is for educational and informational purposes only. > ͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏

Fwd: PNC-27: The Research Peptide That Targets Cancer Cells Directly

Score 0.689 · Account tjphuhs@gmail.com · 3/25/2026, 12:16:52 PM

Fwd: PNC-27: The Research Peptide That Targets Cancer Cells Directly from tjphuhs@gmail.com on 2026-03-25T16:16:52.000Z ---------- Forwarded message ---------- From: Derek from Peptide Price <derekpruski@substack.com> Date: Mar 25, 2026 at 11:55 AM -0400 To: tjphuhs@gmail.com Subject: PNC-27: The Research Peptide That Targets Cancer Cells Directly > If you’ve never heard of PNC-27, you’re not alone — it’s one of the more unique compounds being studied in the research space, and the mechanism is

Fwd: PNC-27: The Research Peptide That Targets Cancer Cells Directly

Score 0.689 · Account oc.tjphuhs@gmail.com · 3/25/2026, 12:16:52 PM

Fwd: PNC-27: The Research Peptide That Targets Cancer Cells Directly from tjphuhs@gmail.com on 2026-03-25T16:16:52.000Z ---------- Forwarded message ---------- From: Derek from Peptide Price <derekpruski@substack.com> Date: Mar 25, 2026 at 11:55 AM -0400 To: tjphuhs@gmail.com Subject: PNC-27: The Research Peptide That Targets Cancer Cells Directly > If you’ve never heard of PNC-27, you’re not alone — it’s one of the more unique compounds being studied in the research space, and the mechanism is

Peptidology Just Upgraded Their Testing Standard and Their Discount

Score 0.688 · Account tjphuhs@gmail.com · 4/8/2026, 12:15:30 PM

Peptidology Just Upgraded Their Testing Standard and Their Discount from derekpruski@substack.com on 2026-04-08T16:15:30.000Z is a test a lot of vendors skip entirely. ICP-MS Heavy Metals ICP-MS (Inductively Coupled Plasma Mass Spectrometry) screens for toxic heavy metals: lead, arsenic, cadmium, mercury, and chromium. These can enter a product through the raw materials used in synthesis or through manufacturing equipment. You won’t taste or see them, and they won’t show up on a purity test — wh

New on PeptidePrice.store: Step One Ventures

Score 0.685 · Account tjphuhs@gmail.com · 4/9/2026, 10:03:41 AM

New on PeptidePrice.store: Step One Ventures from derekpruski@substack.com on 2026-04-09T14:03:41.000Z View this post on the web at https://derekpruski.substack.com/p/new-on-peptidepricestore-step-one Research use only, not for human consumption. Step One Ventures is now live on PeptidePrice.store, and they bring something to the platform that not many vendors offer: raw powder ingredients for mixing your own topicals. For researchers who prefer to DIY their formulations rather than buying pre-m

Fwd: Reducing Histamine Responses with IM Administration — What Researchers Should Know

Score 0.685 · Account oc.tjphuhs@gmail.com · 3/23/2026, 1:17:04 PM

Fwd: Reducing Histamine Responses with IM Administration — What Researchers Should Know from tjphuhs@gmail.com on 2026-03-23T17:17:04.000Z ---------- Forwarded message ---------- From: Derek from Peptide Price <derekpruski@substack.com> Date: Mar 23, 2026 at 11:30 AM -0400 To: tjphuhs@gmail.com Subject: Reducing Histamine Responses with IM Administration — What Researchers Should Know > For research purposes only. > ͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏

Fwd: Reducing Histamine Responses with IM Administration — What Researchers Should Know

Score 0.685 · Account tjphuhs@gmail.com · 3/23/2026, 1:17:04 PM

Fwd: Reducing Histamine Responses with IM Administration — What Researchers Should Know from tjphuhs@gmail.com on 2026-03-23T17:17:04.000Z ---------- Forwarded message ---------- From: Derek from Peptide Price <derekpruski@substack.com> Date: Mar 23, 2026 at 11:30 AM -0400 To: tjphuhs@gmail.com Subject: Reducing Histamine Responses with IM Administration — What Researchers Should Know > For research purposes only. > ͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏

New Testing Standards at Southern Aminos

Score 0.685 · Account tjphuhs@gmail.com · 3/30/2026, 3:53:11 PM

New Testing Standards at Southern Aminos from derekpruski@substack.com on 2026-03-30T19:53:11.000Z View this post on the web at https://derekpruski.substack.com/p/new-testing-standards-at-southern Most vendors send one vial to a lab and call it a day. Southern Aminos is now running full testing across 10 vials per batch — and closing in on a 6.5/7 score on the PeptidePrice.store testing standard. That’s not a small thing. Here’s exactly what that means for your research. What Does “Full Peptide

Fwd: PNC-27: The Research Peptide That Targets Cancer Cells Directly

Score 0.684 · Account tjphuhs@gmail.com · 3/25/2026, 12:16:52 PM

Fwd: PNC-27: The Research Peptide That Targets Cancer Cells Directly from tjphuhs@gmail.com on 2026-03-25T16:16:52.000Z be drawn beyond what controlled research settings have produced. > The Takeaway for Beginner Researchers > PNC-27 is one of the more conceptually elegant compounds in the research space. Rather than broadly attacking any fast-dividing cell, it uses a two-step mechanism: find cancer cells by their own defense protein, then exploit the structural vulnerability of their membrane t

Fwd: PNC-27: The Research Peptide That Targets Cancer Cells Directly

Score 0.684 · Account oc.tjphuhs@gmail.com · 3/25/2026, 12:16:52 PM

Fwd: PNC-27: The Research Peptide That Targets Cancer Cells Directly from tjphuhs@gmail.com on 2026-03-25T16:16:52.000Z be drawn beyond what controlled research settings have produced. > The Takeaway for Beginner Researchers > PNC-27 is one of the more conceptually elegant compounds in the research space. Rather than broadly attacking any fast-dividing cell, it uses a two-step mechanism: find cancer cells by their own defense protein, then exploit the structural vulnerability of their membrane t

Mold Toxicity & Peptides: A Comprehensive Walkthrough

Score 0.684 · Account tjphuhs@gmail.com · 4/28/2026, 7:52:08 PM

Mold Toxicity & Peptides: A Comprehensive Walkthrough from derekpruski@substack.com on 2026-04-28T23:52:08.000Z already running. It’s an offensive weapon. You don’t deploy offense before the defense is built. Research dosing in the literature varies considerably. The principle that holds across the published work: start at a fraction of the target dose and titrate up. If an RS reacts to half a Peptide-S capsule, they’re going to react to LL-37 — period. Some research protocols start at 10% of th

New Testing Standards at Southern Aminos

Score 0.683 · Account tjphuhs@gmail.com · 3/30/2026, 3:53:11 PM

New Testing Standards at Southern Aminos from derekpruski@substack.com on 2026-03-30T19:53:11.000Z Reaction) for sterility testing. PCR is a molecular method that detects the DNA or RNA of bacteria, fungi, and other contaminants directly, without waiting for them to grow in a culture. It’s a different methodology than the culture-based approach and operates on a faster timeline. Worth noting: PCR-based sterility is not currently a recognized compendial standard in the way USP 71 is — meaning it

Peptides For Heart Health

Score 0.682 · Account tjphuhs@gmail.com · 3/27/2026, 6:03:21 PM

Peptides For Heart Health from huntershealthhacks@mail.beehiiv.com on 2026-03-27T22:03:21.000Z Happy Friday! First of all, thank you to everyone who filled out [the survey on BPC-157](https://www.peptidesafetyinitiative.com/bpc-157) in [yesterday’s email](https://huntershealthhacks.beehiiv.com/p/your-bpc-157-experience-could-change-fda-policy). We received an overwhelmingly positive response. If you would like to participate, [here is the link](https://www.peptidesafetyinitiative.com/bpc-157). W

Introducing Peptidology: Testing Taken To A New Level

Score 0.681 · Account tjphuhs@gmail.com · 3/24/2026, 11:15:15 AM

Introducing Peptidology: Testing Taken To A New Level from derekpruski@substack.com on 2026-03-24T15:15:15.000Z sold. They’re spending over $2,000 in testing per batch, and for future batches they’re sending in up to 20 vials for sterility testing alone. That’s not a vendor cutting corners to move product fast. That’s a vendor that’s built their entire operation around getting it right. Code DEREK is live at Peptidology for 15% off. https://peptidology.co/?ref=mxxyvdne [ https://substack.com/red