Drop 1 · Coming soon
Reta Mafia Tee
Gold lettering over the retatrutide molecular structure.
View details →Peptide-themed apparel
For Research Use Only.
Lab-inspired shirts with real molecular art and a vial-label look, printed in gold on black moisture-wicking and cotton styles.
- Moisture-wicking and cotton styles
- Real molecular structures
- Printed on demand
The lineup
Research Collection
Peptide shirts for people who read the label. Nine designs, one new drop every day, and more are on the bench.
Drop 1 · Coming soon
Drop 2 · Coming soon
KLOW Tee
Huge gold KLOW lettering over one clean line of numbers. Big, bold and simple.
View details →
Drop 3 · Coming soon
RUO Lab Rat Tee
A lab rat with sunglasses, a lab coat and a peace sign. He knows exactly how cool he is.
View details →
Drop 4 · Coming soon
Research Use Only Tee
Bold gold “RESEARCH USE ONLY” over the gold P logo. Clean, minimal, and to the point.
View details →
Drop 5 · Coming soon
Wolverine Stack Tee
Two real structures, BPC-157 and TB-500, crossed like a pair of gold blades.
View details →
Drop 6 · Coming soon
GHK-Cu Later Tee
See you later, alligator. A gold line-art gator whose spine is the real GHK structure.
View details →
Drop 7 · Coming soon
Kisspeptin Tee
Playful gold lettering that has fun with the name, over the real kisspeptin-10 structure.
View details →
Drop 8 · Coming soon
Melanotan II Tee
The real structure in gold line art, plus a deadpan weather forecast and two tiny ice crystals.
View details →
Drop 9 · Coming soon
Sequence Tee
PEPTIDESHIRT, spelled as a real amino acid chain. One gold bead per letter, riding a wave.
View details →Peptide Researcher
A minimal title tee for lab-culture fans.
In development
Drop 1 · Coming soon
Research Collection · Drop 1 · Coming soon
Reta Mafia Tee
$29.99
Plus shipping, calculated at checkout. 2XL and up are priced by size.
Gold “RETA MAFIA” lettering over a fine-line rendering of the real retatrutide molecular structure, finished with peptideshirt.com at the bottom of the front.
- FabricPerformance: moisture-wicking polyester tee, V-neck and women’s tank · Men’s muscle tank: soft combed ring-spun cotton with dropped armholes · Cotton: soft ring-spun cotton tee
- SizesMen’s performance tee S–3XL · Women’s V-neck S–2XL · Tanks XS–4XL · Unisex cotton tee XS–5XL · Women’s cotton tee S–2XL
- ColorBlack with metallic-look gold print
- PrintFront: Reta Mafia + molecular structure + peptideshirt.com
- MadePrinted on demand, just for you
The design shows the real retatrutide molecular structure, drawn line by line.
Drop 2 · Coming soon
Research Collection · Drop 2 · Coming soon
KLOW Tee
$29.99
Plus shipping, calculated at checkout. 2XL and up are priced by size.
A huge gold KLOW across the chest with one clean line of gold numbers underneath. Big letters, lots of black space, finished with peptideshirt.com.
- FabricPerformance: moisture-wicking polyester tee, V-neck and women’s tank · Men’s muscle tank: soft combed ring-spun cotton with dropped armholes · Cotton: soft ring-spun cotton tee
- SizesMen’s performance tee S–3XL · Women’s V-neck S–2XL · Tanks XS–4XL · Unisex cotton tee XS–5XL · Women’s cotton tee S–2XL
- ColorBlack with metallic-look gold print
- PrintFront: KLOW + a line of numbers + peptideshirt.com
- MadePrinted on demand, just for you
Apparel only. Big letters, simple design, nothing more.
Drop 3 · Coming soon
Research Collection · Drop 3 · Coming soon
RUO Lab Rat Tee
$29.99
Plus shipping, calculated at checkout. 2XL and up are priced by size.
Gold “RUO LAB RAT” across the top, and below it our resident lab rat: gold shades, a white lab coat over his own gold P tee, a hand in his pocket and a peace sign up. A thin gold outline makes him pop on black, with peptideshirt.com underneath. For the ones who practically live in the lab.
- FabricPerformance: moisture-wicking polyester tee, V-neck and women’s tank · Men’s muscle tank: soft combed ring-spun cotton with dropped armholes · Cotton: soft ring-spun cotton tee
- SizesMen’s performance tee S–3XL · Women’s V-neck S–2XL · Tanks XS–4XL · Unisex cotton tee XS–5XL · Women’s cotton tee S–2XL
- ColorBlack with metallic-look gold print
- PrintFront: RUO Lab Rat + lab rat illustration + peptideshirt.com
- MadePrinted on demand, just for you
Apparel only. No lab rats were harmed. This one is just here to look good.
Drop 4 · Coming soon
Research Collection · Drop 4 · Coming soon
Research Use Only Tee
$29.99
Plus shipping, calculated at checkout. 2XL and up are priced by size.
A clean, minimal chest print: bold gold “RESEARCH USE ONLY” across the top, the gold P logo in the middle, and peptideshirt.com underneath. Lots of black space, no clutter.
- FabricPerformance: moisture-wicking polyester tee, V-neck and women’s tank · Men’s muscle tank: soft combed ring-spun cotton with dropped armholes · Cotton: soft ring-spun cotton tee
- SizesMen’s performance tee S–3XL · Women’s V-neck S–2XL · Tanks XS–4XL · Unisex cotton tee XS–5XL · Women’s cotton tee S–2XL
- ColorBlack with metallic-look gold print
- PrintFront: Research Use Only + gold P logo + peptideshirt.com
- MadePrinted on demand, just for you
Apparel only. Not for human consumption, just human wearing.
Drop 5 · Coming soon
Research Collection · Drop 5 · Coming soon
Wolverine Stack Tee
$29.99
Plus shipping, calculated at checkout. 2XL and up are priced by size.
Two real skeletal structures in gold line art, BPC-157 and TB-500, crossed in an X like a pair of blades, each labelled at its tip. A bold gold WOLVERINE STACK headline up top, finished with peptideshirt.com.
- FabricPerformance: moisture-wicking polyester tee, V-neck and women’s tank · Men’s muscle tank: soft combed ring-spun cotton with dropped armholes · Cotton: soft ring-spun cotton tee
- SizesMen’s performance tee S–3XL · Women’s V-neck S–2XL · Tanks XS–4XL · Unisex cotton tee XS–5XL · Women’s cotton tee S–2XL
- ColorBlack with metallic-look gold print
- PrintFront: WOLVERINE STACK + BPC-157 and TB-500 structures + peptideshirt.com
- MadePrinted on demand, just for you
Apparel only. The only stack here is printed on the shirt.
Drop 6 · Coming soon
Research Collection · Drop 6 · Coming soon
GHK-Cu Later Tee
$29.99
Plus shipping, calculated at checkout. 2XL and up are priced by size.
See you later, alligator, peptide edition. Under a gold GHK-Cu LATER headline sits a line-art gator whose spine is the real GHK structure: the histidine ring is the bump on its back, the lysine side chain is the tail (ending in NH2), and the Cu sits at the neck. Finished with peptideshirt.com.
- FabricPerformance: moisture-wicking polyester tee, V-neck and women’s tank · Men’s muscle tank: soft combed ring-spun cotton with dropped armholes · Cotton: soft ring-spun cotton tee
- SizesMen’s performance tee S–3XL · Women’s V-neck S–2XL · Tanks XS–4XL · Unisex cotton tee XS–5XL · Women’s cotton tee S–2XL
- ColorBlack with metallic-look gold print
- PrintFront: GHK-Cu LATER + backbone gator + peptideshirt.com
- MadePrinted on demand, just for you
Apparel only. After a while, crocodile.
Drop 7 · Coming soon
Research Collection · Drop 7 · Coming soon
Kisspeptin Tee
$29.99
Plus shipping, calculated at checkout. 2XL and up are priced by size.
Big, playful gold KISSPEPTIN lettering that has a little fun with the name, over a fine-line drawing of the real kisspeptin-10 molecular structure. Finished with peptideshirt.com. A guaranteed conversation starter for chemistry fans.
- FabricPerformance: moisture-wicking polyester tee, V-neck and women’s tank · Men’s muscle tank: soft combed ring-spun cotton with dropped armholes · Cotton: soft ring-spun cotton tee
- SizesMen’s performance tee S–3XL · Women’s V-neck S–2XL · Tanks XS–4XL · Unisex cotton tee XS–5XL · Women’s cotton tee S–2XL
- ColorBlack with metallic-look gold print
- PrintFront: playful KISSPEPTIN headline + kisspeptin-10 structure + peptideshirt.com
- MadePrinted on demand, just for you
The structure is the real kisspeptin-10 decapeptide, drawn bond by bond. Apparel only.
Drop 8 · Coming soon
Research Collection · Drop 8 · Coming soon
Melanotan II Tee
$29.99
Plus shipping, calculated at checkout. 2XL and up are priced by size.
A big gold MELANOTAN II over the molecule’s real skeletal structure in gold line art, ring and all. Underneath, a deadpan forecast (yes, winter is coming), flanked by two little ice crystals built from benzene hexagons. Finished with peptideshirt.com.
- FabricPerformance: moisture-wicking polyester tee, V-neck and women’s tank · Men’s muscle tank: soft combed ring-spun cotton with dropped armholes · Cotton: soft ring-spun cotton tee
- SizesMen’s performance tee S–3XL · Women’s V-neck S–2XL · Tanks XS–4XL · Unisex cotton tee XS–5XL · Women’s cotton tee S–2XL
- ColorBlack with metallic-look gold print
- PrintFront: MELANOTAN II + skeletal structure + forecast line with ice crystals + peptideshirt.com
- MadePrinted on demand, just for you
Apparel only. Dress for the season.
Drop 9 · Coming soon
Research Collection · Drop 9 · Coming soon
Sequence Tee
$29.99
Plus shipping, calculated at checkout. 2XL and up are priced by size.
Fun fact: every letter in PEPTIDESHIRT is a real one-letter amino acid code. So we strung them together: twelve gold beads riding a wave across the chest, Pro-Glu-Pro-Thr-Ile-Asp-Glu-Ser-His-Ile-Arg-Thr, N to C. Finished with peptideshirt.com.
- FabricPerformance: moisture-wicking polyester tee, V-neck and women’s tank · Men’s muscle tank: soft combed ring-spun cotton with dropped armholes · Cotton: soft ring-spun cotton tee
- SizesMen’s performance tee S–3XL · Women’s V-neck S–2XL · Tanks XS–4XL · Unisex cotton tee XS–5XL · Women’s cotton tee S–2XL
- ColorBlack with metallic-look gold print
- PrintFront: PEPTIDESHIRT bead chain on a wave + peptideshirt.com
- MadePrinted on demand, just for you
Apparel only. Just our name, spelled in the lab’s alphabet.
Our story
Peptide-themed apparel, lab-inspired shirts
peptideshirt.com makes lab-inspired shirts for science fans: the label readers, the paper skimmers, and the ones who can name a molecule by its structure.
Our designs borrow from the lab, from the “For Research Use Only” vial label to fine gold line drawings of real molecular structures, and put them on black moisture-wicking and cotton tees and tanks. Lab-inspired, gym-ready, and made to start conversations.
Our shirts are apparel and design only. Nothing here is medical advice or a claim about any substance, and we do not sell peptides.
Questions
FAQ
Do you sell peptides?
No. peptideshirt.com sells apparel only. Our designs are inspired by chemistry and lab culture, and nothing on this site is a product, recommendation, or claim about any substance.
How does shipping work?
Each shirt is printed after you order, then shipped to you. Production and delivery times can vary by location and season. Shipping is not included in our prices: it is paid by the customer and calculated at checkout, where you will see the shipping options, cost and estimated timing.
What is your return policy?
Because every shirt is made to order, returns and exchanges are handled case by case. If something is wrong with your order, reach out and we will work with you to make it right. Full policy details will be posted before launch.
How do the shirts fit?
The men’s performance tee has a standard athletic fit, and the women’s performance V-neck has a more tailored cut. Every design is also available as a men’s muscle tank (soft ring-spun cotton with dropped armholes) or a women’s performance tank (moisture-wicking polyester with a scoop neck), and as a soft ring-spun cotton tee in a unisex or women’s cut. The men’s performance tee comes in S–3XL, the women’s V-neck in S–2XL, both tanks in XS–4XL, the unisex cotton tee in XS–5XL and the women’s cotton tee in S–2XL. Sizes 2XL and up cost a little more. A full size chart will be available on each product. If you are between sizes, we generally suggest sizing up for a relaxed fit.
What does “printed on demand” mean?
We do not keep warehouses of stock. Your shirt is printed when you order it, which means less waste and more room for new research collection designs. It may take a little longer than off-the-shelf retail, but each one is made for you.
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