SP Research reviews
SP Research reviews: 6 independent lab tests across 2 products, with a limited lab record.
Written by the Peptide Vendor Reviews editorial team
Is SP Research legit? Lab record: Limited
How we rate- 6 independent tests
- 4 of 5 lots filled to label
- Median purity 99.85%
- 1 of 2 products graded D or E
Some of SP Research's products graded D or E. The shops below tested A or B for the same peptides.
Better-tested Tirzepatide
SP Research graded D. Paradigm Peptide's Tirzepatide graded A across 10 tests, $4.97 / mg.
Buy from Paradigm PeptideAll better-tested optionsPeptide Vendor Reviews independently tests products and verifies reviews. Public methodology, no pay-to-rank.
Better-tested options
Where SP Research graded D or E, these shops' samples of the same peptide graded A or B. Ordered by grade, then price per mg. Partner status never changes the order.
Tirzepatide
SP Research: grade DSP Research products we've tested
Best-graded first. Grades come from the share of each product's samples that passed purity and quantity checks. Buy links open SP Research's site.
- IpamorelinAGREAT
- Tests
- 3
- Passed
- 100.0%
- TirzepatideDPOOR
- Tests
- 3
- Passed
- 66.7%
What the testing shows
Across 5 measured samples from SP Research, 1 came in more than 5% under the quantity on the label (20%). Another 2 measured more than 5% over. Purity across 5 readings ran from 99.75% to 99.9%, median 99.85%. Samples span Feb 2026 to May 2026.
- Under label
- 1/5
- Median purity
- 99.85%
- Latest sample
- May 2026
more than 5% short
99.75%–99.9% range
first tested Feb 2026
Our read on SP Research
5 of SP Research's 6 graded samples passed (83%), and 100% of all samples were sent in by buyers rather than by the shop.
When a sample failed, the most common reason was the lab could not confirm it was the labelled peptide (1 time).
Against the 302 shops with at least five graded tests, SP Research's pass rate is at or above 79% of them, and it has more tests on record than 9% of them.
When and how SP Research was tested
Samples per month. The darker part of each bar failed.
- Labs used
- Krause Analytical (6)
- Who sent the samples
- buyers 100%
- Batches covered
- 2 distinct batch numbers
Why SP Research's failed samples failed
The only failed test, with the lab's reason.
Tirzepatide · Mar 4, 2026
the lab could not confirm it was the labelled peptide
Lab testing results
Independent results across 2 products.
Individual lab tests
Date
5/27/2026
Purity
99.8%
Quantity
10 mg → 10.8 mg
Lab
Krause Analytical
Vial
No label / Silver crimp / Yellow cap
Date
3/10/2026
Purity
99.9%
Quantity
20 mg → 18.6 mg
Lab
Krause Analytical
Vial
No Label / Silver Crimp / Yellow Cap
Date
3/4/2026
Purity
—
Quantity
—
Lab
Krause Analytical
Vial
No Label / Gold Crimp / Clear Cap
Date
3/2/2026
Purity
99.9%
Quantity
60 mg → 68.6 mg
Lab
Krause Analytical
Vial
No Label / Silver Crimp / White Cap
Date
2/16/2026
Purity
99.85%
Quantity
10 mg → 9.73 mg
Lab
Krause Analytical
Vial
No Label / Silver Crimp / Yellow Cap
| Product | Date | Score | Purity | Quantity | Lab | COA |
|---|---|---|---|---|---|---|
| IpamorelinNo label / Silver crimp / Yellow cap | 5/27/2026 | 10.0 | 99.8% | 10 mg → 10.8 mg | Krause Analytical | View |
| TirzepatideNo Label / Silver Crimp / Yellow Cap | 3/10/2026 | 10.0 | 99.9% | 20 mg → 18.6 mg | Krause Analytical | View |
| TirzepatideNo Label / Gold Crimp / Clear Cap | 3/4/2026 | — | — | Krause Analytical | View | |
| TirzepatideNo Label / Silver Crimp / White Cap | 3/2/2026 | 10.0 | 99.9% | 60 mg → 68.6 mg | Krause Analytical | View |
| IpamorelinNo Label / Silver Crimp / Yellow Cap | 2/16/2026 | 10.0 | 99.85% | 10 mg → 9.73 mg | Krause Analytical | View |
Which SP Research products tested best
Ipamorelin has the strongest record, graded A or B.
Tirzepatide graded D or E: a large share of its samples missed purity or quantity thresholds.
Buying from SP Research
If you order from SP Research, the A- and B-graded products are the safer picks on this record. For the weaker ones, the better-tested options on this page come from other shops.
We don't track SP Research's prices yet. Shipping, payment and refund terms are on their site.
The official store is spresearchcenter.com. Check the address before you pay.
What to check before you pay
- The lot number on the vial matches the certificate
- The certificate names the lab and the test date
- Fill versus label, not purity alone
- A refund policy in writing
Track SP Research
Create a free account to save this vendor, get alerts for new lab tests, and watch price changes.
SP Research: common questions
Is SP Research legit?
We rate lab records, not businesses. Limited lab record: 6 independent tests, 4 of 5 lots filled to label, median purity 99.85%, 1 of 2 products graded D or E. Each result links to its original certificate in the table above.
What do SP Research reviews say?
We don't hold scored customer reviews for SP Research yet. The independent lab results on this page are the evidence we have.
Which SP Research peptides tested best?
We have graded 2 SP Research products. Ipamorelin graded A or B. Tirzepatide graded D or E.
Is there a SP Research coupon code?
We don't have a verified SP Research coupon code. A discount changes the price, not what is in the vial.
Ordering from SP Research?
Limited lab record: 6 independent tests, 4 of 5 lots filled to label, median purity 99.85%, 1 of 2 products graded D or E.