Streamlining Cognitive Care Pathways With Blood-Based Screening


Author: Elisabeth Thijssen, PhD

Published On: November 23, 2025


Cognitive concerns are emerging in primary care more frequently than ever, and it’s essential to have clear, practical tools you can trust early in the evaluation process.

Traditional cognitive care pathways often feel slow or fragmented, and that can make it difficult for you to feel confident about next steps, especially when patients and families are looking to you for answers.

However, blood-based screening is helping shift that experience by offering earlier biological insight.

These tests can help patients transition from uncertainty to clarity more quickly and in a more supportive and streamlined manner.

Why Cognitive Care Pathways Need Streamlining

We all want cognitive evaluations to feel structured and predictable. But in everyday practice, cognitive care pathways don’t always unfold as cleanly as we’d hope.

As a primary care physician, you are often the first person patients turn to when they notice changes in their memory.

And when symptoms are mild or inconsistent, that responsibility becomes even more challenging.

The Current Challenges PCPs Face

Primary care doesn't always have the time or resources to provide in-depth cognitive assessments, and even when everything is done correctly, systemic barriers still hinder progress.

Across practices, the following challenges tend to show up consistently:

  • Limited access to neurology or specialty support
  • Long waits for geriatrics or memory clinics
  • Wide variability in cognitive screening tools and workflows
  • Diagnostic uncertainty during early symptom presentation
  • Patient hesitation or fear that delays follow-up

The Impact of Delayed Screening on Outcomes

When evaluations take too long to move forward, you lose opportunities to intervene early — not just clinically, but emotionally.

As that window narrows, it becomes harder for you to offer families the sense of direction they’re hoping for. Blood-based biomarker testing helps close that gap by giving you meaningful data much earlier in the process.

Early clarity gives patients and their families room to plan, adjust, and feel supported, rather than leaving you to manage uncertainty on both sides of the exam room.

How Blood-Based Screening Supports Faster, Earlier Insight

As research advances, we’re seeing a clear shift toward biological-first approaches in cognitive care, including the Alzheimer's Association's endorsement of biomarker testing.

Blood-based biomarkers allow you to identify Alzheimer’s-related changes long before symptoms become severe, which helps you make more informed decisions sooner.

What Blood-Based Biomarkers Reveal

Plasma biomarkers measure key biological changes associated with Alzheimer’s disease, including amyloid and tau patterns, through a simple blood draw.

Because these changes appear years before significant symptoms, they give you a more transparent early window into a patient’s brain health.

This kind of insight helps you differentiate between normal aging, reversible concerns, and early neurodegenerative patterns far earlier than traditional tools can.

Just as importantly, it allows you to identify which patients should be referred to a neurologist sooner, when disease-modifying treatments can have the greatest impact.

Why PCPs Are Adopting Blood-Based Tests First

Biomarker testing ecosystems, like Neurogen, easily integrate into your existing workflow. There’s no need for new equipment, no complicated processes, and no disruption to how you already care for patients.

They help you act sooner and give patients answers earlier by offering advantages such as:

  • Faster, low-barrier access compared to PET or lumbar puncture
  • A more patient-friendly experience, reducing hesitation
  • Quick turnaround that supports more meaningful follow-up
  • Easy integration within everyday primary care routines

A Clearer Cognitive Care Pathway With Biomarker Screening

Introducing biomarker testing early in the pathway helps you transform an often uncertain, drawn-out process into something more predictable and supportive for patients and families.

The Traditional Pathway (And Its Bottlenecks)

Traditionally, cognitive evaluations rely heavily on brief screens, observation, and gradual symptom progression before more advanced diagnostics are available

Even when you do everything right, months can pass before a patient reaches specialty care

These delays aren’t a reflection of clinical judgment — they’re the product of a system that wasn’t built for early biological insight.

The Streamlined Pathway With Blood-Based Screening

Blood-based screening reshapes this experience. Instead of waiting for symptoms to worsen or referrals to open up, you gain objective insight during the initial evaluation.

A streamlined pathway often looks like this:

  • Order plasma biomarker testing when early symptoms show
  • Use results to determine the urgency of next steps
  • Prioritize high-risk patients for imaging or neurology referral
  • Continue monitoring lower-risk patients within primary care

Integrating Blood-Based Screening Into Primary Care Workflows

Our goal is to make early cognitive screening feel simple, accessible, and actionable for you.

When to Suggest a Blood-Based Screening Test to Your Patients

There are several clinical moments where biomarker testing provides meaningful clarity. Many clinicians choose to order a test when they see scenarios such as:

  • Mild or ambiguous memory concerns
  • Subtle cognitive or behavioral changes reported by family
  • Abnormal results on brief cognitive screens
  • Higher-risk profiles based on age, family history, or comorbidities

How Results Inform Next-Step Decision-Making

Normal results allow you to monitor with confidence, reduce unnecessary referrals, and support early lifestyle interventions when appropriate.

Elevated results, on the other hand, provide a clear signal to move forward with imaging or specialty care.

In either case, the pathway becomes more structured as it’s grounded in objective insight rather than waiting for symptoms to evolve.

Why Plasma Biomarkers Are Becoming a New Clinical Standard

Plasma biomarkers are gaining momentum in the clinical community due to their reliability and accessibility.

Ongoing developments in plasma biomarker research show strong validity and alignment with more advanced diagnostic tools

The Rising Evidence Supporting Plasma Testing

A growing body of research continues to reinforce plasma biomarkers as a dependable tool for early detection, including:

  • Strong cross-center validation across diverse patient groups
  • High correlation with PET/CSF findings
  • Predictive accuracy for Alzheimer’s-related changes
  • Integration into major research frameworks

Improve Your Cognitive Care Pathways With Neurogen

Blood-based screening is quickly becoming a foundational element of early cognitive care.

As more clinicians integrate these tools into practice, we will continue to see faster insights, earlier interventions, and more efficient use of specialty resources.

At-home Alzheimer’s Test

If you’re looking for a straightforward way to support patients earlier in their cognitive care journey, suggesting our at-home Alzheimer’s test is a practical starting point toward better memory health.

Elisabeth Thijssen, PhD

Elisabeth Thijssen, PhD

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Dr. Elisabeth Thijssen leads Neurogen’s scientific vision, uniting over a decade of expertise in neurodegenerative research and biomarker innovation. Her groundbreaking work on Alzheimer’s blood testing has redefined what’s possible in early disease detection. Holding a Cum Laude PhD in the Neurochemistry of Alzheimer’s Disease, along with advanced degrees in Pharmaceutical and Biomedical Sciences, Dr. Thijssen’s leadership ensures Neurogen’s mission remains grounded in both scientific excellence and human purpose. With experience spanning consulting, biotech, and academic research, she has driven transformative R&D and strategic partnerships that translate science into real-world impact.