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c/labresults·posted 1 year ago by u/clara_weiss

[Lab] 18th independent test on GL Biochem — 99.5% on a claimed 99.0%, and the trend is the interesting part

Lab Well Actually ×5 Cold Box ×3

18th independent test on GL Biochem — 99.5% on a claimed 99.0%, and the trend is the interesting part, and before anyone asks: same batch throughout, single submission, no cherry-picking between services.

99.5% and 99.0%. Those are measured, not estimated, and not rounded up in my favour.

Split one vial between Janoshik and Medutest. The two numbers were within half a point of each other and I stopped worrying about which lab to trust.

First result I ever posted here got asked for the batch number and the claim. Fair, and my posts have been better ever since.

Please do not ask me what dose you should be on. I genuinely do not know and neither does anyone else here.

1,882 up / 589 down76% upvoted47 commentsid qoeq4q19 Jul 2025
Supplier named in this thread
The source page carries the verification log and every independent test a member has paid for. The storefront link is marked nofollow and sponsored; nobody here is paid for it.

47 comments

28 in this archive, depth 5

best — the order this archive was captured in

u/runa_wikstrom119 points·1 year ago

The template is vendor, compound, batch, service, claim, result, and who paid. Every one of those fields exists because a result missing it has been argued about here before.

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u/clara_weissOP92 points·1 year ago

Correction: that is the claimed figure, and the measured one is the higher of the two in your own screenshot.

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u/lina_almeida107 points·1 year ago

Correction: that is the claimed figure, and the measured one is the higher of the two in your own screenshot.

Agreed — and two services on one batch is the strongest thing any of us can produce individually.

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u/hedda_aguirre43 points·1 year ago

net peptide content if the report gives it, and say which you are quoting

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u/clara_weissOP55 points·1 year ago

Fourth lot from the same supplier in the log now and the band has been tight the whole way. That consistency is the actual finding.

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u/janoshik_junkieindependent tester72 points·1 year ago

How to build a series that means something, if you are going to spend money on testing anyway.

Three tests on one lot tells you about your measurement. Three tests on three lots, spread over a year, tells you about a process. The second is the one worth paying for and it costs the same.

Buy small, keep the batch numbers, send one vial per lot, and post each one with the claim next to it. After four or five you have something no individual review can give you: a band, a direction and a date range. That is what the source pages are made of.

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[deleted]51 points·1 year ago

[deleted]

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u/clara_weissOP41 points·1 year ago

Area percent or net peptide content?

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u/whois_wanda28 points·1 year ago

Agreed on quoting the claim alongside the result. Half the arguments here are two people comparing to different reference numbers.

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u/endotoxin_elliemicro17 points·1 year ago·edited

Area percent or net peptide content?

clara_weiss is right that the band matters more than the peak. Consistency across lots is the finding.

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u/milos_trevino84 points·1 year ago

one result is a data point, agreement between two services is evidence

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u/coring_the_stopper38 points·1 year ago

How many separate lots does your series cover?

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u/coa_janitormod · c/coa24 points·1 year ago

I would not post that as a finding. It is a single result and the template asks you to say so.

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u/plateau_patrol24 points·1 year ago

Area percent and net peptide content are different measurements and most reports give one. Quote which, or the comparison downstream is meaningless.

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u/liv_nkemelu71 points·1 year ago

say whether you paid for it yourself

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u/coring_the_stopper54 points·1 year ago

three lots beats three tests on one lot

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u/due_diligence_dee60 points·1 year ago·edited

That service reports area percent by default. Worth stating, since the thread has been comparing it to a mass figure.

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u/tomas_lundgren49 points·1 year ago

Right, and a point or two between services is ordinary. It is agreement, and every month somebody posts it as a scandal.

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u/teodor_jansen33 points·1 year ago

Small fix — same supplier, different lot. The two rows in the log are not the same batch.

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u/elise_ramos14 points·1 year ago

Which service, and did you pay for it yourself?

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u/janoshik_junkieindependent tester27 points·1 year ago

inter-lab variance runs a point or two, plan your outrage accordingly

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u/peptidemeter_pat20 points·1 year ago·edited

inter-lab variance runs a point or two, plan your outrage accordingly

This is why the template has a batch field. Without it the result is about a vial nobody can identify.

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u/bianca_demir6 points·1 year ago

Not convinced by the comparison. Different services, different gradients, and you are treating one as ground truth.

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u/nayeli_iyer46 points·1 year ago

That reading assumes area percent and net peptide content are the same number. They are not, and the report says which it is.

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u/katrin_diallo22 points·1 year ago

Yes. Two services on the same batch is the strongest thing an individual member can produce, and it is not expensive.

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u/rina_bergstrom11 points·1 year ago

This. The trend across separate lots is the number that tells you about a process rather than a vial.

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u/hedda_aguirre5 points·1 year ago

post the claim next to the result or the number floats

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u/camila_kowalski1 point·1 year ago

vendor, compound, batch, service, result — that is the template

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About c/labresults

A running record of independent test results people paid for themselves. Every post follows the same shape: vendor, product, batch, testing service, method, and the number. Good results and bad results are equally welcome and get equal scrutiny.

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Oct 2023created
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Janoshik Analytical

Independent HPLC and mass spec. The number you get is the number they found.

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Custom peptides and amino acids direct from the manufacturer since 1998. ISO 9001 / cGMP. Batch COA every order.

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