Short answer
Third-party labs typically charge $100–$400 per potency sample, with results in 3–10 days. In-house, a complete HPLC system like the CTS-300 costs $18,000 and about $4 per test in consumables. At 30 samples a month and $150 per lab test, it pays for itself in about 4 months; at 10 samples a month, in about a year.
What you pay a lab, and what you don't see
Lab price lists usually quote $100–$400 per potency test, depending on the matrix, the panel and how fast you need it. That's the visible cost. The others:
- Waiting. 3–10 days per result means product sits, harvest decisions are made blind, and a failed batch is discovered after it's packaged.
- Re-tests. When a result looks wrong or a batch is borderline, you pay again and wait again.
- Testing less than you should. At $150 a test, most operations only test finished product. Problems that in-process checks would have caught early become expensive later.
- Shipping and couriers, and the staff time to package, label and track samples.
What in-house testing costs
| Cost | CTS-300 |
|---|---|
| Complete system (instrument, column, balance, standards, consumables kit, methods, software with LIMS, training) | $18,000 USD, one time |
| Consumables per test (solvents, column wear, standards) | about $4 |
| Staff time | hands-on sample preparation; the instrument runs on its own |
| Space | 18 × 9 × 10.5 in on a bench |
You don't need a separate software license, and the analytical balance is included, so there's nothing else to buy before the first sample.
The payback math
Each in-house test saves you the lab fee minus about $4 of consumables. Divide the system price by your monthly saving:
| Samples / month | Lab price | Lab spend / year | In-house consumables / year | Payback |
|---|---|---|---|---|
| 10 | $150 | $18,000 | $480 | 12.3 months |
| 20 | $100 | $24,000 | $960 | 9.4 months |
| 30 | $150 | $54,000 | $1,440 | 4.1 months |
| 60 | $100 | $72,000 | $2,880 | 3.1 months |
| 100 | $75 | $90,000 | $4,800 | 2.5 months |
Plug in your own numbers in the ROI calculator.
When in-house testing doesn't pay
Be honest about your volume. At 5 samples a month and $150 a test, payback takes about two years. That can still be worth it for the speed and control, but it isn't a cost decision anymore. And in regulated markets you'll still pay a licensed lab for the official compliance test of each batch. In-house testing reduces the number of lab tests (no more trial runs, re-tests and pre-checks), not to zero.
It pays fastest when you:
- test in-process and finished product, not just one or the other;
- make several product types (edibles, tinctures, concentrates) that each need their own testing;
- grow hemp or cannabis and want to time harvests by potency;
- formulate products and need to hit a label claim;
- offer testing to other businesses as a service.
Speed is worth money too
Same-day results change how you work: you can test a batch before deciding to package it, adjust a formulation the same afternoon, or pick the harvest date from data instead of a guess. Those savings rarely show up in a per-test comparison, but they're often bigger than the lab fees themselves. For a side-by-side of lab pricing, see the testing price comparison.
Frequently asked questions
How much does a cannabis potency test cost?
At a third-party lab, typically $100–$400 per sample depending on the matrix, panel and turnaround time. In-house with an HPLC like the CTS-300, consumables cost about $4 per test after the one-time $18,000 system cost.
How long does it take an in-house HPLC to pay for itself?
It depends on volume and your current lab price. At 30 samples a month and $150 per lab test, about 4 months; at 10 samples a month, about a year; at 5 samples a month, about two years.
Do I still need a third-party lab if I test in-house?
In regulated markets, yes, for the official compliance test. In-house testing replaces the extra lab tests: pre-checks, in-process tests, re-tests and R&D samples.
What are the ongoing costs of running an HPLC?
Solvents, column wear and reference standards, which come to about $4 per test on the CTS-300, plus the staff time for sample preparation.
See what in-house testing would save you
The CTS-300 is a complete benchtop HPLC lab: instrument, balance, reference standards, validated methods, LIMS with COA reports, and training with our application chemist. $18,000, under $5 per test.