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Research Labs vs RNK Health

Compare pricing, features, and medications to find the best GLP-1 provider for your weight loss journey

Research Labs vs RNK Health: Overview

Choosing between Research Labs and RNK Health for GLP-1 weight loss medication? Both are popular providers, but they differ in pricing, medication options, and service features.

Research Labs offers both semaglutide and tirzepatide at $60/month with a rating of 5.5/10. RNK Health also provides both semaglutide and tirzepatide at $197/month with a 7.7/10 rating.

The price difference of $137/month is significant - Research Labs is the more budget-friendly option, while RNK Health positions itself as a premium service.

Our recommended brand

After reviewing all 148 providers on this platform, we've identified CoreAge Rx as offering the most transparent pricing model. At just $99/month — the same price every month, every dose — there are no surprise charges or hidden fees. Combined with exceptional service quality, personalized support, and access to both semaglutide and tirzepatide, it represents the best value without compromising on care.

Visit CoreAge Rx →Read full review

At a glance

Price Difference

$137/mo

Rating Difference

2.2

Winner

RNK Health

Best For

Quality

Research Labs

View full Research Labs review →

Rating

5.5/10

Monthly Price

$60Cheaper

Medications

GLP-1 peptidesBPC-157TB-500NAD+

Pros

✓The quality documentation is genuinely thorough for this category: HPLC and mass spectrometry on every lot, a signed certificate of purity shipped with every order, and a public lab-report library you can read before buying
✓Endotoxin testing (LAL assay) and microbial screening to USP standards on every batch before release
✓Full batch traceability - each vial traced to its production lot, raw materials and test results
✓States an average of 99.3% HPLC purity across all batches and publishes the underlying numbers rather than only the claim
✓Partner labs described as GMP-aligned, with documented SOPs and controlled environments
✓Pricing is straightforward and published: individual peptides run roughly $59.99 to $159.99, with free shipping over $150 (checked July 28, 2026)
✓The research-use-only status is disclosed up front behind an acknowledgement gate, not buried in a footer after checkout
✓A published phone number and a catalogue organised into peptides, blends, sprays and capsules, with a reference database

Cons

✗This is not a treatment and cannot lawfully be sold as one. Everything here is labelled for research use only and explicitly not for human consumption. If you are reading this site to find help with weight loss, this is not an option - it is laboratory material
✗There is no clinician at any point. Nobody takes a history, nobody checks your contraindications, nobody sets a dose and nobody monitors you. The safety net that every licensed provider on this site provides simply does not exist here
✗A certificate of analysis tells you what is in the vial. It tells you nothing about whether the contents are safe for you, what dose is appropriate, or how it interacts with your medications
✗Products arrive as lyophilised powder requiring reconstitution, and bacteriostatic water, syringes and other supplies are not included - so self-administration would also mean improvising sterile technique
✗Peptides such as BPC-157 and TB-500 appear on the FDA's list of substances that raise significant safety concerns for compounding, and have little or no published human trial evidence
✗There is no prescription, no pharmacy oversight and no adverse-event reporting pathway. If something goes wrong there is no clinical record and no provider to call
✗No Trustpilot or BBB record exists, so there is no independent consumer feedback of any kind
✗Our rating reflects suitability for someone seeking treatment, which is what this site compares. As a laboratory supplier the documentation is strong; as a route to a GLP-1 or peptide for your own health it is the wrong door, and a licensed provider is the right one

Choose Research Labs

RNK Health

View full RNK Health review →

Rating

7.7/10Better

Monthly Price

$197

Medications

semaglutidetirzepatide

Pros

✓Per-product prices are listed openly on the homepage rather than hidden behind a quiz: semaglutide from $197/mo, tirzepatide from $297/mo, NAD+ from $129/mo, sermorelin from $129/mo, B12-MIC from $97/mo (checked July 27, 2026)
✓Cancel or pause at any time with no long-term commitment, managed from your own account rather than by emailing support
✓Publishes both the dispensing pharmacy's location and the medical provider's address, which is unusually specific for this category
✓1-on-1 calls with US doctors are part of the programme, not an upsell
✓A satisfaction guarantee is advertised alongside progress tracking and built-in guidance
✓Trustpilot rating of 4.1 across 454 reviews gives at least a moderate independent signal
✓Wide catalogue if you want more than weight care - NAD+ in three delivery formats, sermorelin, enclomiphene and an 80-biomarker DNA panel

Cons

✗The affiliate link for this offer lands on RNK's NAD+ funnel, not its GLP-1 pages, so anyone following the link for weight loss arrives at a longevity product and has to navigate away
✗'Full pricing details are shown during checkout' - so the advertised 'from' prices are a floor, and what you actually pay is not visible until you are committing
✗We could not find an explicit 'not FDA-approved' disclosure for the compounded medications. Nearly every competitor states this plainly; RNK describes its products only as 'USA Compounded: Lab-tested, high-purity'
✗GLP-1 pricing is at the higher end - $197 for semaglutide and $297 for tirzepatide, where several rivals advertise under $150
✗The NAD+ landing page promises you will 'LOOK, FEEL & PERFORM 10 YEARS YOUNGER' with 'the most powerful NAD+ protocol on the market' - claims with no cited evidence
✗The 'satisfaction guarantee' and 'Risk FREE' language is used without published terms defining what either actually entitles you to
✗No BBB profile or complaint history to check
✗As with all compounded GLP-1s, no efficacy data specific to RNK's own patients is published

Choose RNK Health

Feature-by-feature comparison

Feature	Research Labs	RNK Health
Monthly Price	$60	$197
Rating	5.5/10	7.7/10
Medications	GLP-1 peptides, BPC-157, TB-500, NAD+	semaglutide, tirzepatide
Insurance Accepted	No	No
Support Hours	Not published	Not published
Live Chat	No	No
Free Shipping	Yes	Yes
Shipping Speed	Nationwide US shipping, free on orders over $150	Not published
Mobile App	No	No
Dedicated Coach	Not included	Not included
Follow-up Frequency	None - there is no clinical relationship	1-on-1 calls with US doctors plus progress tracking
Money-back Guarantee	See the site's refund policy; no clinical guarantee applies	A satisfaction guarantee is advertised, but we found no published terms defining it
Cancellation Policy	One-off purchases rather than a subscription	Cancel or pause any time from your account, with no long-term commitment

Which should you choose?

Choose Research Labs if you:

→Want to save $137/month with a more affordable option
→Want more medication options to choose from
→Value: the quality documentation is genuinely thorough for this category: hplc and mass spectrometry on every lot, a signed certificate of purity shipped with every order, and a public lab-report library you can read before buying

Get started with Research Labs

Choose RNK Health if you:

→Prefer a higher-rated service (7.7/10 vs 5.5/10)
→Value: per-product prices are listed openly on the homepage rather than hidden behind a quiz: semaglutide from $197/mo, tirzepatide from $297/mo, nad+ from $129/mo, sermorelin from $129/mo, b12-mic from $97/mo (checked july 27, 2026)

Get started with RNK Health

Website previews

Research Labs

Research Labs website

RNK Health

RNK Health website

Our recommendation

RNK Health comes out ahead with a higher rating of 7.7/10. It also provides multiple medication options including both semaglutide and tirzepatide.

Get started with RNK Health

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