M1P5S03-1J — M-Peptide Science Retatrutide
Vendor COAM-Peptide Science | Retatrutide, last activity 2 months ago
A community group test of this batch has completed. The vendor's certificate from Janoshik reports 99.82% purity, in line with their previous retatrutide batches. Four community members requested independent testing; none has been submitted. First seen more than three months ago.
4 test requests · 8 related batch concerns · 7 mentions · summary from 8 sources · updated Oct 2
Get notified when a lab result is posted, a group test forms, or this batch is flagged by the community.
Test Results
The label says 15 mg. Janoshik weighed 16.4 mg — 9% more than the label. Your dose depends on what is really in the vial, so the steps below use the measured amount.
Draw
18 units
on a U-100 insulin syringe, for 1.5 mg
Going by the label you would draw 20 units — which from this vial is actually 1.64 mg, not 1.5 mg.
- The vial holds dry powder: 16.4 mg of Retatrutide, as weighed.
- Water spreads that powder evenly through the liquid: 16.4 mg ÷ 2 ml = 8.19 mg per ml.
- An insulin syringe counts in units, 100 to the ml, so each unit carries 82 mcg.
- Your dose divided by that: 1.5 mg ÷ 82 mcg = 18 units.
The water changes how many units a dose takes, never how much peptide you get. Twice the water means twice the units for the same dose. What sets the dose is how much is in the vial — which is why the measured amount matters.
Arithmetic, not medical advice. Assumes a U-100 syringe and that the powder fully dissolves. The figure is from the vial that was tested; yours is from the same lot but was not weighed itself.
Related batches
5 of 5 tested
same lot series
An independent test from Freedom Diagnostics returned 99.83% purity, alongside the vendor's Janoshik certificate of…
same lot series
A community group test through Freedom Diagnostics is currently testing this batch
also M-Peptide Science
A community group test of this batch is complete (11 participants, Janoshik or Freedom)
BPC-157 & TB-500 Blend, same vendor
This batch received one quality concern and two positive reports
APS
An independent test found endotoxin at 1,437.86 EU/vial, far exceeding the 10 EU/vial working limit, while the vendor's…
Community Intelligence
- 4 test requests
- 1 concern report involving M2P0S27-6J
- 1 concern report involving M6P0S01-6J
- 1 concern report involving M0P5S23
- 1 concern report involving REPTN
- 2 concern reports involving 2026041210
- 4 concern reports involving XTP-R30-003
- 1 concern report involving JP20250821
- 1 concern report involving REPTN-1
Reported against other M-Peptide Science Retatrutide batches, not this one.
Also known as: M1P5S031JM1P5S03-1J
Activity
RESULTS IN:MPS R15 RT-15 M1P5S03-1J (Black Cap)
☘️T-60 M6P0S01-6J Yellow [https://janoshik.com/tests/198223-T60_Yellow_6A8LKPCW5ELV](https://janoshik.com/tests/198223-T60_Yellow_6A8LKPCW5ELV) M6P0S01-4A Yellow [https://janoshik.com/tests/150549-T6...
View in Telegram →Did anyone purchase RT15 batch M1P5S03-1J in May that would like to test mass/purity and endotoxins at ILS Labs? It’s only $180 for both tests, and shipping will add like $15-30 on top of that. This b...
View in Telegram →☘️RT-15 M1P5S03-2F Black https://janoshik.com/tests/108421-RT15_Black_I4B7PNUCM8RW M1P5S03-1J Black https://verify.janoshik.com/tests/106352-RT15_Black_8TXUTN87BZW1 ☘️RT-20 M2P0S03-2F Blue https:...
View in Telegram →Hi G would you also mind sharing the group test results with me for M1P5S03-1J
View in Telegram →I placed an order about a week ago, and somehow I received batch number Rt15 M1P5S03-1J I am pretty sure the group testing for this is over but is there a way i can get the results?
View in Telegram →Looking for MPS ELSA Reta 15 test group USA BATCH 🇺🇸 MPS US warehouse 🛍 Flash Sale ✨RT-15: $120/kit ☘️Batch：M1P5S03-2F Black [https://janoshik.com/tests/108421-RT15_Black_I4B7PNUCM8RW](https:/...
View in Telegram →members onlyVendor
M-Peptide Science