Is One Aminos or Stealth Research Labs better?

One Aminos scores 85.3 of 100 against Stealth Research Labs at 82.1. One Aminos publishes more certificates: 27 against 10. Both figures come from the same published rubric over sourced data points, and each links to the document behind it.

Which of One Aminos and Stealth Research Labs is cheaper?

Across the 10 compounds both price, One Aminos is cheaper on 5 and Stealth Research Labs on 2. Price per milligram is compared at each vendor's own listed vial size.

Who tests One Aminos and Stealth Research Labs peptides?

One Aminos: United Laboratories. Stealth Research Labs: Bioviridian Inc.. A vendor-published certificate is recorded as a claim; only an independently commissioned assay counts as corroboration.

How many certificates do One Aminos and Stealth Research Labs publish?

One Aminos has 27 lot-level certificates on file and Stealth Research Labs has 10. Both counts are of certificates this index located and read, not of certificates claimed.

Head to head

One Aminos vs Stealth Research Labs

One Aminos scores 85.3 of 100 against Stealth Research Labs at 82.1. One Aminos publishes more certificates: 27 against 10.

Same rubric, same date · 37 certificates between them · 10 compounds in common

	One Aminos 85.3/100 Rank 8 of 58 Visit	Stealth Research Labs 82.1/100 Rank 9 of 58 Visit
Score0–100 on the published rubric	85.3 Extensively documented	82.1 Well documented
Evidence coverageShare of scored fields sourced	89%	91%
Certificates on fileLot records this index read	27	10
Testing laboratory	United Laboratories	Bioviridian Inc.
ISO/IEC 17025	—	—
Label accuracyMean gap, labeled vs assayed	7.3%	2.8%
Basket price% of the peer median	96%	100%
Enforcement recordActions on record	None on record	None on record
Discount code	—	—

Price, compound by compound

10 priced on both

Price per milligram at each vendor’s own listed vial size. One Aminos is cheaper on 5, Stealth Research Labs on 2. The median column is the peer median across every vendor this index prices.

Compound	One Aminos	Stealth Research Labs	Median
BPC-157	$5.00	$5.00	$5.50
GHK-Cu	$0.70	$0.80	$0.60
Melanotan I	$3.50	$4.50	$4.10
Melanotan II	$3.50	$4.50	$4.00
MOTS-c	$6.00	$5.50	$5.50
NAD+	$0.12	$0.12	$0.12
Retatrutide	$7.00	$7.00	$7.20
Selank	$3.50	$4.00	$4.20
Semax	$3.50	$4.00	$4.00
Tirzepatide	$5.00	$4.50	$6.50

Which to pick

Pick One Aminos if

you want the stronger documentation record of the two; you want the deeper certificate history (27 lots); you want the cheaper basket overall; you buy mostly the compounds it prices lower.

Pick Stealth Research Labs if

you prefer its catalogue or its terms; on the recorded evidence the two are close.

Questions

Is One Aminos or Stealth Research Labs better?: One Aminos scores 85.3 of 100 against Stealth Research Labs at 82.1. One Aminos publishes more certificates: 27 against 10. Both figures come from the same published rubric over sourced data points, and each links to the document behind it.
Which of One Aminos and Stealth Research Labs is cheaper?: Across the 10 compounds both price, One Aminos is cheaper on 5 and Stealth Research Labs on 2. Price per milligram is compared at each vendor's own listed vial size.
Who tests One Aminos and Stealth Research Labs peptides?: One Aminos: United Laboratories. Stealth Research Labs: Bioviridian Inc.. A vendor-published certificate is recorded as a claim; only an independently commissioned assay counts as corroboration.
How many certificates do One Aminos and Stealth Research Labs publish?: One Aminos has 27 lot-level certificates on file and Stealth Research Labs has 10. Both counts are of certificates this index located and read, not of certificates claimed.

Both records were last re-verified on 2026-10-04 and 2026-10-03. Every figure is computed from the same rubric over sourced data points; see the methodology or the full best peptide vendors ranking. Partner links are marked and cannot affect a score.