AxonCPT vs. Conners CPT 3: What's Different

Disclosure: AxonCPT publishes this comparison and makes a competing product. Conners CPT 3 is a product of Multi-Health Systems (MHS) and is not affiliated with AxonCPT. Conners CPT 3 facts below are from MHS’s own pages, accessed September 2026; verify current specifications and pricing with MHS before purchasing.

AxonCPT and Conners CPT 3 are both continuous performance tests that can be administered without dedicated hardware, but they differ in device requirements, norms, and how each vendor positions the test’s evidence base. Conners CPT 3 Online runs in a browser on MHS’s MAC+ platform and supports both local and remote use; AxonCPT runs entirely remotely, from a link the clinician sends. Neither test diagnoses ADHD by itself. This guide compares what each one requires, measures, and costs.

Photo by Zulfugar Karimov on Unsplash

AxonCPT vs Conners CPT 3 at a glance

	Conners CPT 3 Online	AxonCPT
Setting	Local or remote administration (applies to the standalone CPT 3, not K-CPT 2 or CATA) [1]	Fully remote, from an emailed link [5]
Patient device	Web app on MHS’s MAC+ platform; no special hardware [1]	Any browser on a phone, tablet, or desktop; no app or login [5]
Modality	Visual only [1]	Visual/response-based, five metrics with a Q1–Q4 vigilance breakdown [5]
Test length	14 minutes [1]	About 16 minutes [5]
Ages (vendor)	8+ [1]	Not listed on axoncpt.com; ask AxonCPT
Norms	Conners CPT 3 normative sample, detailed in the product manual [1]	Cohort-matched norms from a 20,000+ reference dataset across 12 age × sex cohorts [5]
FDA 510(k)	No clearance claim found on the pages we reviewed [1][3]	Not marketed as FDA-cleared; positioned as objective measurement to supplement clinical judgment [5]
Reports	Standard scores/T-scores against the normative sample, per MHS’s materials [1]	Instant report at test completion; see the sample report
Published price	$10 per use, minimum purchase of 15 uses ($150) [2]	2 free tests/month, no card; $49/5 tests; $149/20 tests; $79/month unlimited [5]

Both can be administered remotely — the details differ

Conners CPT 3 Online is the MHS product most similar to AxonCPT in one respect: MHS states that the standalone CPT 3 supports remote administration, not just an in-office visit [1]. That’s a meaningful difference from T.O.V.A., which requires in-clinic hardware, as covered in our head-to-head look at TOVA vs. Conners CPT 3. But the remote workflows aren’t identical: Conners CPT 3 Online runs through MHS’s MAC+ platform, which is built around clinician-managed test assignment within that ecosystem, while AxonCPT is designed around a single emailed link the patient opens with no login or account setup on their end [1][5]. If your practice already uses other Conners instruments (Conners 3, CAARS) through MHS, staying in that platform for CPT 3 may be simpler. If you want the lightest possible patient-side experience across whatever device they own, that’s what AxonCPT is built for.

Test length and what’s measured

Conners CPT 3 is the shorter test at 14 minutes; AxonCPT runs about 16 minutes [1][5]. Both are visual-only; MHS’s separate CATA test adds an auditory/visual attention measure but is documented as a locally administered instrument, not part of the remote CPT 3 [1]. Conners CPT 3 reports a defined set of scores — including omissions, commissions, hit reaction time, hit reaction time variability, and detectability (d′) — as age- and gender-normed T-scores, with scores above roughly 60 flagged as atypical [1]. AxonCPT reports five metrics against age- and sex-matched cohort norms with a Q1–Q4 vigilance breakdown across the session, letting you track the same patient’s pattern across visits [5]. For a deeper look at what specific CPT metrics mean and how to read them, see how to read a CPT report: a clinician walkthrough.

Try it with your next patient. AxonCPT gives you 2 free tests every month — no card required. Send a link, your patient finishes in ~16 minutes from home, and you get a norm-referenced report instantly. Create your free account →

What does the evidence say about each one specifically?

A 2024 systematic review focused specifically on Conners CPT-3 screened 1,480 title/abstracts down to 13 included studies and found that most rated CPT-3 a “weak or poor predictor” of an ADHD diagnosis when used alone, though a couple of studies found it useful for distinguishing ADHD from comorbid anxiety or OCD [3]. Pooled across commercially available CPTs generally (not CPT-3 specifically), a 2024 JAACAP meta-analysis found sensitivity of 0.75 and specificity of 0.71 for the overall/ADHD score — below the 0.80/0.80 threshold the authors used as a rough acceptability bar for a standalone diagnostic tool [4]. AxonCPT is a newer product with a shorter independent, peer-reviewed research history than Conners CPT-3, which has been studied since earlier CPT-II and CPT-3 editions. Neither product should be used as a solo diagnostic instrument. See CPT accuracy for ADHD: what the meta-analyses show for the full picture.

Billing and coding

Neither vendor’s pages state a product-specific CPT billing code. As our guide to CPT code for TOVA, Conners CPT 3, and QbCheck explains, the applicable code (96146 for a single automated test, 96136–96139 for a battery administered and scored by a technician or clinician, or 96130–96133 for evaluation services) depends on how the test was given and what else was done during the visit, not on the product name. The same logic applies to AxonCPT: coding depends on your workflow. Confirm with a certified coder and the payer before billing.

What does each cost?

Using published list prices only, no tax, shipping, or bulk discounts:

Scenario	Conners CPT 3 Online (from $10/use, 15-use minimum) [2]	AxonCPT [5]
1 test	$150 minimum purchase applies	$0 using the free tier (2 tests/month)
5 tests	Covered within the 15-use minimum	$49 (one 5-test pack)
20 tests	$200 (20 × $10)	$149 (one 20-test pack)
High volume	Per-use pricing continues	$79/month unlimited

Conners CPT 3’s 15-use minimum purchase means a low-volume user pays for capacity they may not immediately use; AxonCPT’s free tier and smaller packs are built for lighter or more irregular testing volume.

When Conners CPT 3 may fit better

• Your practice already uses other Conners instruments (Conners 3, CAARS) and values a single vendor ecosystem.
• You need the K-CPT 2 (ages 4–7) or CATA in-office alongside the standalone CPT 3.
• Your youngest patients are 8 or older and a visual-only, 14-minute test fits your battery.
• Your organization is already set up on MHS’s MAC+ platform for other testing.

When AxonCPT may fit better

• Your patients test on whatever device they have, without needing a specific platform login.
• You want to avoid a minimum-purchase commitment and start with a free tier.
• You retest often during titration and want a low, predictable per-test cost or an unlimited monthly plan.
• You want a report the moment the patient finishes, with a vigilance breakdown built for comparing visits over time.

How this looks in practice

A psychologist adding an objective measure to a battery might work through this sequence:

1. Check whether the patient is 8 or older and whether a visual-only measure meets the referral question, or whether K-CPT 2 or CATA is needed in-office.
2. Decide whether platform continuity matters. If your practice already runs Conners 3 and CAARS through MHS, staying in that ecosystem may simplify workflow.
3. If not, and remote flexibility matters more, send the test with AxonCPT. With objective ADHD testing with AxonCPT, the patient opens a link and finishes in about 16 minutes on their own device, and the norm-referenced report is ready immediately. See what the report looks like.
4. Interpret the result alongside the interview, history, and rating scales, and document your reasoning regardless of which CPT you used.

Frequently asked questions

Can Conners CPT 3 be given remotely, like AxonCPT? Yes, MHS states that the standalone CPT 3 supports both local and remote administration, unlike K-CPT 2 or CATA [1]. AxonCPT is remote by design, with no in-office option needed.

Is either product FDA-cleared? We found no FDA 510(k) clearance claim on the Conners CPT 3 pages we reviewed. AxonCPT is not marketed as FDA-cleared either; it is positioned as objective measurement to supplement clinical judgment [1][5].

Which test is shorter? Conners CPT 3 is 14 minutes; AxonCPT is about 16 minutes [1][5].

Is one more accurate than the other for diagnosing ADHD? No head-to-head study directly compares the two on the same sample. A dedicated 2024 systematic review of Conners CPT-3 found it a weak-to-poor standalone predictor of ADHD diagnosis in most included studies, consistent with pooled findings across commercial CPTs generally [3][4]. Both should be read alongside a full clinical evaluation.

Does Conners CPT 3 cost more than AxonCPT? At list price, Conners CPT 3 Online starts at $10 per use with a 15-use ($150) minimum purchase [2]. AxonCPT starts with 2 free tests every month and offers packs from $49 [5]. Actual cost depends on your testing volume.

Start testing your patients with AxonCPT

If you want a remote-capable CPT with no minimum purchase and a free tier to start, AxonCPT gives your patients a browser-based test on any device and gives you a norm-referenced report the moment they finish. Start with 2 free tests every month, no card required. Create your free AxonCPT account or learn more at axoncpt.com.

References

1. Multi-Health Systems. Conners CPT Online Suite storefront. Accessed September 2026.
2. Multi-Health Systems. Conners CPT Online Suite storefront (pricing). Accessed September 2026.
3. Callan PD, Swanberg S, Weber SK, Eidnes K, Pope TM, Shepler D. Diagnostic Utility of Conners Continuous Performance Test-3 for Attention-Deficit/Hyperactivity Disorder: A Systematic Review. J Atten Disord. 2024;28(6):992-1007.
4. Arrondo G, Mulraney M, Iturmendi-Sabater I, et al. Systematic Review and Meta-Analysis: Clinical Utility of Continuous Performance Tests for the Identification of Attention-Deficit/Hyperactivity Disorder. J Am Acad Child Adolesc Psychiatry. 2024;63(2):154-171.
5. AxonCPT. axoncpt.com. Accessed September 2026.