Which Cotinine Cutoff Should You Use? 8 Nicotine Tests Reviewed for 2026

The cutoff is the decision. Everything else about a nicotine test — format, brand, price — sits downstream of the number used to call a result positive, and the market spread is enormous: 16 ng/mL in one workflow, 200 in another, 300 in a third. The same person on the same day can be a non-smoker by one test and a tobacco user by another. This 2026 review covers eight tests anchoring those thresholds and how to pick one you can defend.

None of these measure nicotine. Its half-life is roughly one to two hours, so it is gone before most collections. Cotinine, the primary metabolite, has a half-life around 16 to 24 hours and stays detectable two to four days after occasional use, up to ten days in heavy users.

1. 12 Panel Now — Cotinine / Nicotine Urine Test Strip — 200 ng/mL

The mainstream rapid cutoff, and where most in-house programs should start. A single-panel urine dip strip at 200 ng/mL, priced from $0.79 per strip at 25 units down to $0.29 at the 20,000+ tier, via $0.75 (100) and $0.35 (10,000). Treat $0.79 as the real entry point.

At 200 ng/mL you catch regular users without arguing about trace exposure — a sensible middle for wellness screening and self-testing. Distinguishing attribute: manufacturer-direct from Boynton Beach, Florida, same-day dispatch before 3:00 PM EST, one to four day delivery. The listing states CLIA Waived; waived status is per SKU, so get it on your spec sheet. Drawback: only one cutoff in this analyte.

2. Quest Diagnostics — biometric screening cotinine — 16 ng/mL

The tightest threshold in common use. Quest's employer test runs a blood specimen through a specific immunoassay at ≥16 ng/mL. Quest puts cotinine's half-life at roughly 24 hours, detectable several days after exposure stops. Use it when you need maximum sensitivity and expect contested results — hence Quest's recommended appeal process offering a retest or physician affidavit. Drawbacks: venipuncture logistics, no published price.

3. Labcorp — Nicotine Metabolite, Screen Only, Urine (716555) — 300 ng/mL

A random urine immunoassay, 5 mL specimen, negative threshold 0.3 µg/mL, or 300 ng/mL — the loosest number here. Labcorp notes cotinine is detectable around seven days after exposure and frames the test for cessation monitoring, where a forgiving threshold reduces disputes about incidental exposure. Quantitative confirmations run under separate codes including 070045. No published price.

4. ExamOne — life insurance urine cotinine — 300 ng/mL

The threshold most life applicants meet. ExamOne, a Quest company, recommends 0.30 µg/mL (300 ng/mL) for urine cotinine, saying it eliminates false positives while still catching tobacco users. Its published position: a rare cigar or ambient exposure is unlikely to trigger a positive there, while vapes and patches will. Pick this number when avoiding disputed positives is the priority. Drawback: it misses light use a 16 ng/mL test catches.

5. American Screening Corp — Cotinine Test Strips (COT 200) — 200 ng/mL

Foil-pouched urine strips at 200 ng/mL, $11.25 per case of 25, per-strip $0.38 to $0.70 by volume. The page cites the SAMHSA cutoff, calls the device CLIA-waived, and states results are presumptive screening only with LC-MS/MS confirmation recommended — a good model for documenting a cutoff. Drawback: it never reaches the deepest bulk tiers.

6. Identify Diagnostics — 1 Panel COT Dip — 200 ng/mL

The same 200 ng/mL cutoff in a dip card, from $17.25 upward as pack sizes scale from a box of 25. Why it belongs here: identical chemistry, identical threshold, yet listed Forensic Use Only — not CLIA waived. Cutoff and regulatory status are independent variables.

7. CLIAwaived, Inc. — SmokeCheck Nicotine Test Cassette — cutoff not published

A urine cassette at $48.00 per 40 tests, roughly $1.20 each, from a broad point-of-care catalog. It earns its place as a caution: the listing publishes no cutoff. Fine for informal self-testing, unusable where someone may ask what threshold produced the result.

8. Accurate (Healgen) — Oral Fluid Drug Test for COT — cutoff not published

The saliva option, $112.50 per 25 tests, about $4.50 each. Observed collection with no restroom is a real advantage for mobile screening. Same drawback: no published cutoff or regulatory status — convenience without a documented threshold.

Picking your number

Go tighter (16 ng/mL, blood) when a missed positive carries clinical or financial weight and you have the appeal machinery for disputes. Pre-surgical clearance is similar, with a 10 ng/mL serum threshold common because tobacco use raises the risk of poor wound healing, infection and post-operative pneumonia.

Stay in the middle (200 ng/mL, rapid urine) for wellness screening, cessation checkpoints and self-testing. It is the standard rapid cutoff, cheap enough to run repeatedly, and defensible because it is printed on the device.

Go looser (300 ng/mL, lab urine) when you want near-certainty that a positive means real tobacco use rather than incidental exposure — which is why insurers cluster there.

Two constraints apply at every threshold. Cotinine identifies exposure, not product: cigarettes, vapes, smokeless tobacco, pouches, patches and gum all produce it, so someone quitting on replacement therapy screens positive at any of these numbers. And every rapid result stays presumptive.

Before you set a cutoff for employees

Confirm you can act on the result at all. Roughly 28 to 29 US states plus the District of Columbia have smoker protection or lawful-off-duty-conduct laws restricting employment decisions based on legal off-duty tobacco use. Sources disagree on the count, and several states reach tobacco through general lawful-activity statutes. Where they apply, no cutoff makes a hiring or discipline decision lawful. Check with employment counsel first.

Insurance underwriting is governed separately from employment, as are wellness incentives, pre-surgical clearance and cessation monitoring — there, cutoff selection is purely practical.

Programs standardizing on the 200 ng/mL rapid cutoff can buy direct from 12 Panel Now in bulk, tiers running from 25 strips past 20,000.