Official product information
Check Your Protoflow Batch
What was supplied in place of a certificate, what a lot number and a CoA each actually prove, and whose desk answers the only phone number attached to this product.
Written and reviewed by the Protoflow Editorial Desk · Last updated September 24, 2026
Quick answer
No certificate of analysis document was supplied, and the supplied wrap photograph shows no lot code and no best-before date. The pack calls its own lot and certificate references draft labels rather than lab proof. The route that works is the order desk — which belongs to BuyGoods, the payment processor. The label itself prints no phone, no email and no website.
The honest answer first
What was supplied, and what was not
This page exists to answer one question — can you check that the bottle in your hand came from a batch somebody tested? — and the honest answer has to come before the method.
The pack states it plainly and so will we: lot PRO-26/TH-1902 and certificate reference PRO-1902-26-TH are draft labels, not lab proof. No certificate of analysis document was supplied to this desk, so neither reference can be checked from here. The wrap photograph we were given does not show a lot code or a best-before date either — those are normally stamped on the base of the bottle after filling.
So there are two reference strings in the supplied material and no document behind either of them. Lot PRO-26/TH-1902 and certificate reference PRO-1902-26-TH are described by the pack that supplied them, in its own words, as draft labels rather than lab proof. We are printing them here because they were supplied and because a reader may well have seen them elsewhere, not because either can be verified from this desk.
Two further absences matter just as much. No certificate of analysis document was supplied at all — not a scan, not a summary, not a laboratory name. And the photograph of the wrap label we were given shows no lot code and no best-before date. That is not necessarily a fault of the product: those are normally stamped onto the base of the bottle after filling. It does mean nothing in the supplied material can be matched against anything else in it.
Three things people treat as one
A lot number, a certificate of analysis and a GMP mark
What each one is, what each one establishes, and what each one is routinely assumed to establish and does not.
Three terms get used interchangeably on supplement pages and they mean three different things. Knowing which is which is most of the skill of checking a batch, on any product.
A lot number
An identifier a manufacturer assigns to a single production run: one mix of raw materials, one filling session, one set of records. It is usually stamped on the base of the bottle beside a best-before date.
What it proves
That the bottle belongs to an identifiable run. If anything ever goes wrong with that run — a recall, a mislabelled ingredient, a contamination finding — the lot number is how you find out whether your bottle is affected.
What it does not prove
Nothing at all about quality. A lot number is a filing reference: it says the run exists and can be looked up, and says nothing about what the run contained.
A certificate of analysis
A certificate of analysis, or CoA, is the laboratory document for a particular lot. A useful one names five things: the lot it covers, the laboratory, the date, the tests run, and the results against the specification.
What it proves
That somebody measured something and wrote down what they found. Depending on the tests, it can establish identity — that the herb in the capsule is the herb on the label — potency, and the absence of specified contaminants.
What it does not prove
That the product works. A CoA is about contents, not effects, and it only covers the tests listed on it. A CoA with no lot number cannot be tied to any particular bottle, which is why the two documents are only useful as a pair.
A GMP certified mark
Good Manufacturing Practice is a standard for how a facility operates: documented procedures, batch records, cleaning, calibration, training and traceability. An audit against it is a real exercise carried out by a real body.
What it proves
That a facility was assessed against a process standard, on a particular date, within a particular scope.
What it does not prove
Anything about this formula, this batch or this bottle. It is also the mark most often printed without the three details that would make it checkable: who certified, when, and what was in scope. None appears in anything supplied here, and no manufacturer is named at all — only a distributor.
The route that works
Whose desk that number actually is
An ordinary, dialable Delaware number belonging to the payment processor — and a label with no contact route printed on it at all.
There is one route that actually works, and being precise about whose route it is matters more here than on most products.
The order line supplied to this desk is +1 (302) 200-3480, described in the pack as the BuyGoods default order desk. It is an ordinary, dialable Delaware number. Note whose desk it is: BuyGoods is the payment processor that runs the checkout, not the brand and not the manufacturer. The label itself prints no phone number and no email at all — just a distributor and a street in Aurora, Colorado. If you have a question about what is in the bottle rather than about your order, there is no published route to anyone who would know.
The checkout on the sales page is operated by BuyGoods, a payment processor. The order line supplied to this desk is BuyGoods’ default order desk, which is why it can help with an order and cannot help with a question about the formula.
The number is real, it dials, and it belongs to a payment processor. It can find your order, tell you what shipped, change an address and start a refund. It is not a technical desk and it does not hold batch records.
And the label itself prints nothing
This is the part worth saying slowly. The wrap label carries no phone number, no email address and no website at all. It names a distributor — Distributed by: PhytoThrive Labs, 19655 E 35th Dr #100, Aurora, CO 80011, USA — and a street address, and that is the entirety of the contact information printed on the regulated document. No manufacturer is named anywhere on it.
The label names a distributor with a street address in Aurora, Colorado. It prints no phone number and no email beside it, and the office and returns addresses supplied to this desk are in New York rather than Colorado. A distributor is not a manufacturer, and no manufacturer is named anywhere on this packaging.
So if your question is about your order, there is a desk for it. If it is about what is inside the capsule — which form of niacin, what extract ratio the hawthorn is, which laboratory tested the batch — there is no published route to anybody who would know. That gap is in the label rather than in the marketing.
Six things
What to have in front of you before you call
The order desk is +1 (302) 200-3480. These are the six things that make the call short.
The bottle itself, turned over
Look at the base and along the bottom edge of the wrap for a stamped code and a best-before date. Neither appears on the photograph supplied to this site, but a physical bottle is stamped after filling and yours may carry both. Write down exactly what is printed, including any slashes and spacing, because those characters are the whole reference.
Your order number and the email you ordered with
The desk is a payment processor’s order desk, so its records are organised around transactions rather than around batches. Your order ID is the key to everything it can see. The email address on the order is the second key.
The date you paid
Not the date the parcel arrived. The 60-day money-back window runs from purchase, so the payment date is the one that decides what you are still entitled to ask for.
The two reference strings, and the caveat attached to them
Lot PRO-26/TH-1902 and certificate reference PRO-1902-26-TH. Quote them if it helps the desk search, but say where you got them, because the pack that published them calls them draft labels rather than lab proof.
The specific question, written down before you dial
“Which lot is my bottle from, and is there a certificate of analysis for it?” is a better opening than “is this genuine?” A narrow question gets either an answer or a clear no, and a clear no is itself information worth having.
Somewhere to write the answer down
Note who you spoke to, the date, and what they said they could and could not access. If you later need a refund, that record is the difference between a conversation and an argument.
Three habits
What to do anyway, and what a batch check can settle
If the desk cannot help — and on a batch question it may well not be able to — there are three things worth doing anyway, and none of them requires anything from the seller.
Photograph the bottle before you open it. The wrap, the base, the safety seal and any stamped code, in good light. If there is ever a question about what you received, that set of photographs is the only independent record you will have. The label itself tells you to check one of those things before you take anything: “do not use if safety seal is damaged or missing”.
Screenshot the guarantee wording on the sales page, with the date visible. The pack states 60 days from purchase, unless the sales page prints a longer window. Note where it starts: from the date you pay, not from your first capsule. Read it on the sales page before you pay and screenshot it with the date showing.
Keep the order email. It carries the tracking number, the order ID and the payment date — the three pieces of information every subsequent conversation will start from.
What a batch check can and cannot settle
A lot number and a matching certificate would tell you that a particular run was tested and what the tests found. They would not tell you the formula does anything: that is a question about trials rather than batches, and no trial of this formula exists.
The reverse is also true, and it is the fairer half of the point. The absence of a certificate here is not evidence that the product is contaminated, mislabelled or poorly made. It is an absence of evidence in either direction — which is exactly the position this site keeps finding itself in on this product, and exactly why the panel that does publish all fourteen of its amounts deserves the credit it gets elsewhere on this site.
Questions
Protoflow FAQ: batch check questions
What are the lot and certificate numbers?
The supplied pack gives lot PRO-26/TH-1902 and certificate reference PRO-1902-26-TH, and describes both, in its own words, as draft labels rather than lab proof. No certificate document was supplied, so neither can be checked from this desk.
Who do I call?
+1 (302) 200-3480, which the pack describes as the BuyGoods default order desk. BuyGoods is the payment processor that runs the checkout. It can help with an order, tracking, a change or a refund.
Is there a number for questions about the formula?
No. <strong>The label prints no phone number, no email and no website at all</strong> — only a distributor and a street address in Aurora, Colorado. The email supplied to this desk, [email protected], belongs to the brand’s information site.
Who makes it?
Not stated. The label prints “Distributed by: PhytoThrive Labs, 19655 E 35th Dr #100, Aurora, CO 80011, USA”. A distributor is not a manufacturer, and no manufacturer is named anywhere on the wrap.
Why are the office and the label in different states?
Because they are different organisations. The label names a distributor in Aurora, Colorado. The office and returns addresses supplied to this desk are both in New York. Neither is the manufacturer, which is not named at all.
References
Sources for this page
- U.S. Food and Drug Administration. Dietary Supplements. www.fda.gov. Accessed September 24, 2026.
- Office of Dietary Supplements, National Institutes of Health. Dietary Supplements: What You Need to Know. ods.od.nih.gov. Accessed September 24, 2026.
- National Center for Complementary and Integrative Health, NIH. Using Dietary Supplements Wisely. www.nccih.nih.gov. Accessed September 24, 2026.
- U.S. Food and Drug Administration. Tainted Sexual Enhancement and Energy Products. www.fda.gov. Accessed September 24, 2026.
Next
Keep reading
The ten seals, read one at a time
What each mark establishes, and the two that the label contradicts.
Read it →Who answers what, and when
One desk for orders, one for these pages, and one gap nobody fills.
Read it →How to claim a refund
The address, the postage, and how long the money takes to come back.
Read it →Check the pack before you order Protoflow
Sixty capsules a bottle, two capsules daily with water, thirty days a bottle. Fourteen ingredients, fourteen published amounts, no proprietary blend. The capsule shell is gelatin. No pack price was supplied to this desk, so read the figure on the sales page before you pay. Sixty days from purchase to change your mind. The order desk supplied to us is +1 (302) 200-3480.
Price shown at checkout · 60-day window from the date of purchase · ships from inside the US · the label’s own support line is +1 (302) 200-3480