We’re developing fingerstick hormone testing for TRT patients and clinicians—with the goal of reviewing selected hormone results together during the same office visit, without sending that sample to a laboratory.
Explore the clinic vision ↘A portable reader. A test cartridge. A connected app.
In development. Same-visit results are a target; timing and clinical use require validation.
A fingerstick.
A result to discuss
with your clinician.
The opportunity: move selected hormone measurements into the TRT consultation, so the clinician and patient can review results together.
A fingerstick in the clinic could reduce the need for a separate venous blood draw and a send-out laboratory test for selected hormone measurements, once the platform is validated and authorized for that use. The goal is less coordination between collection, results, and the next conversation with your clinician.
The intended workflow is to collect a fingerstick sample, analyze it on the portable reader, and deliver results for clinician review during the appointment. That could support a more informed assessment and treatment discussion while the patient is still in the office.
Same-visit result delivery is a development target, not an established turnaround time. PrimalCheck is not intended to replace every blood test or laboratory service used in TRT care. Diagnostic use and treatment decisions will depend on validated performance, authorized intended use, and clinician assessment.
Collecting blood at home and analyzing it at home are different experiences. PrimalCheck aims to bring the analysis to the sample.
| The journey | Mail-in hormone testingExample: LetsGetChecked | PrimalCheckProposed platform |
|---|---|---|
| Collect | Collect your sample at home. | A fingerstick sample applied to a cartridge. |
| Analyze | Return your sample to a laboratory. | A portable reader analyzes the cartridge.Intended workflow; requires validation. |
| Receive | Online results after laboratory processing; advertised turnaround of approximately 2–5 days. | Results sent to a connected app.Result timing has not been established. |
| What changes | Home collection with laboratory processing. | Designed to remove shipping and support convenient repeat monitoring. |
Comparison concerns the testing workflow, not analytical accuracy or clinical superiority. Source: LetsGetChecked: How it works ↗. Timelines vary by test and service. PrimalCheck features are development goals.
Three connected steps. No outbound sample shipment in the intended process.
Apply a capillary blood sample to a purpose-built test cartridge. Sample volume and collection instructions will be established during development.
The proposed reader measures the cartridge’s assay signals to produce quantitative hormone results. Each assay will need performance validation.
The connected app is intended to organize results over time, giving users and their clinicians a clearer record to discuss.
Imagine a single place to review measurements and keep collection context alongside them. Explore these fictional views of the proposed app.
Demonstration only. The example contains no patient data and does not provide medical interpretation.
An illustrative view of repeated hormone measurements.
Illustrative data · No reference range or treatment recommendation
Convenience only matters if results can be trusted. The platform’s intended capabilities must be demonstrated through development and validation.
Our initial market focus is TRT clinics and their patients. We’re seeking clinician input on which hormone measurements, turnaround times, and workflow requirements would make an in-office fingerstick platform useful in practice.
Test menu, accuracy, sample requirements, turnaround time, pricing, and intended use remain to be finalized. Proposed applications extend to women’s hormone health and other areas of endocrine monitoring as the platform develops.
We’re seeking TRT clinicians and clinic owners to help define the first use case, alongside assay and device developers, research collaborators, and investors who understand diagnostics.
No. PrimalCheck is in development. The device render and app views on this website illustrate the proposed experience; they are not a commercially available product.
No. This concept describes an intended workflow advantage. Analytical performance and clinical suitability will require validation against appropriate reference methods.
No. The goal is to reduce venous sampling and send-out testing for specific hormone measurements once validated and authorized. Other monitoring, confirmatory testing, and laboratory services may still be needed. A fingerstick also collects blood; the proposed difference is the collection method and where analysis takes place.
The initial test menu has not been finalized. Each analyte has distinct technical requirements, and inclusion will depend on feasibility, validation, and the intended regulatory pathway.