Healthier World with Quest Diagnostics
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<p>Healthier World with Quest Diagnostics aims to prompt action from insight as we keep you up to date on current clinical and diagnostic topics to transform lives and illuminate a path to better health.</p>
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Publishing Since
6/5/2024
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Recent Episodes
July 13, 2026
41 - Empowering primary care in the new era of Alzheimer’s disease diagnostics (25 min)
For decades, assessing Alzheimer’s disease (AD) pathology required expensive PET scans or invasive lumbar punctures, creating significant diagnostic bottlenecks at the neurologist’s office. In this episode, Maeson Latsko, PhD and Dr. Matt Stroh, PhD explore how groundbreaking blood-based biomarkers are completely changing the landscape of brain health. The conversation highlights the recent FDA clearance of a p-tau181 triage test to help rule out AD, as well as the power of advanced multibiomarker models. By combining plasma Aβ42/40 ratio and p-tau217, clinicians can now accurately predict amyloid PET positivity. Adding APOE4 allele count significantly reduces indeterminate results. This episode breaks down how these accessible tools are empowering primary care providers (PCPs) to confidently triage mild cognitive impairment (MCI), explore secondary causes of impairment, and streamline patient care well before a specialty referral is made. This episode will Introduce the shifting clinical landscape of Alzheimer's care, including the role of recently FDA-cleared p-tau181 tests in helping PCPs rule out AD pathobiology (2:15) Differentiate between normal age-related cognitive decline, mild cognitive impairment (MCI), dementia, and Alzheimer’s disease (4:30) Translate the pathophysiology of AD (amyloid plaques and tau tangles) into the clinical utility of advanced blood-based models, demonstrating how combining Aβ42/40 and p-tau217 accurately predicts amyloid PET positivity, while adding APOE4 significantly reduces indeterminate results (6:45) Outline an actionable primary care workflow for patients presenting with cognitive complaints, balancing AD biomarker testing with the assessment of secondary, reversible causes (14:10) Ordering information Quest AD-Detect ABeta 42/40 and p-tau217 Evaluation, Plasma Quest AD-Detect® Beta Amyloid 42/40 Ratio, Plasma Quest AD-Detect® Phosphorylated tau217 (p-tau217), Plasma Quest AD-Detect® Phosphorylated tau181 (p-tau181), Plasma Quest AD-Detect® Apolipoprotein E (ApoE) Isoform, Plasma Dementia Panel, Secondary Causes Additional resources Clinical Education Center | Quest Diagnostics Role of blood testing for Alzheimer’s disease biomarkers within the primary care setting | Quest Diagnostics Alzheimer's Risk Assessment | Quest Diagnostics The Coming Alzheimer's Disease Healthcare Revolution Survey Report AD Detect Multimarker Panel for PCPs | Quest Diagnostics References Weber DM, Stroh MA, Taylor SW, et al. Development and clinical validation of blood-based multibiomarker models for the evaluation of brain amyloid pathology. Preprint. medRxiv. 2025;2025.02.27.25322892. April 2025. doi:10.1101/2025.02.27.25322892 Hansson O, Edelmayer RM, Boxer AL, et al. The Alzheimer's Association appropriate use recommendations for blood biomarkers in Alzheimer's disease. Alzheimers Dement. 2022;18(12):2669-2686. doi:10.1002/alz.12756 Jack CR Jr, Bennett DA, Blennow K, et al. NIA-AA Research Framework: Toward a biological definition of Alzheimer's disease. Alzheimers Dement. 2018;14(4):535-562. doi:10.1016/j.jalz.2018.02.018 Data on file. Quest Diagnostics; 2026.
June 29, 2026
40 - Unlocking answers faster with whole exome sequencing (17 min)
Whole exome sequencing (WES) is transforming the way genetic testing has moved from a research tool to an increasingly important first-line diagnostic test for many patients. In this episode, Rebecca Johnson Wheeler, MS, CGC and Steve Keiles, MS, CGC discuss how advances in WES, growing insurance coverage, and expanding clinical applications are helping patients get answers faster while improving targeted treatment and care. This episode will Review current trends and guidelines driving increased adoption of whole exome sequencing in clinical practice (3:20) Discuss the potential benefits and limitations of whole exome sequencing including the important components of the test (4:55) Explain how the clinical interpretation of WES may change over time upon reevaluation as new patient information becomes available (8:15) Evaluate how genetic expertise can support clinicians throughout the testing and interpretation process (13:30) Date: June 2026 Speaker(s): Rebecca Johnson Wheeler, MS, CGC; Steve Keiles, MS, CGC Contributor(s): Rebecca Johnson Wheeler, MS, CGC; Steve Keiles, MS, CGC; Maeson Latsko, PhD; Meenakshi Mahey Kumar, MS, CGC; Whitney Dodge, MS, CGC; Emily Partack, MS, CGC Additional resources: Test information: https://www.questdiagnostics.com/healthcare-professionals/about-our-tests/genetics/exome Blog: https://www.questdiagnostics.com/our-company/actions-insights/2026-blogs/considering-mitochondrial-genomes-in-whole-exome-testing Ordering information: Whole Exome | Test Detail | Quest Diagnostics Whole Exome Family Trio | Test Detail | Quest Diagnostics Whole Exome Family Duo | Test Detail | Quest Diagnostics References: Reinholdt L, Chesler E, Pera M, Rosenthal N. The rare-to-common disease journey: a winding road to new therapies. Trends Genet. 2025;41(9):762-773. doi:10.1016/j.tig.2025.05.003 Manickam K, McClain MR, Demmer LA, et al. Exome and genome sequencing for pediatric patients with congenital anomalies or intellectual disability: an evidence-based clinical guideline of the American College of Medical Genetics and Genomics (ACMG). Genet Med. 2021;23(11):2029-2037. doi:10.1038/s41436-021-01242-6 Smith L, Malinowski J, Ceulemans S, et al. Genetic testing and counseling for the unexplained epilepsies: an evidence-based practice guideline of the National Society of Genetic Counselors. J Genet Couns. 2023;32(2):266-280. doi:10.1002/jgc4.1646 Rodan LH, Stoler J, Chen E, Geleske T; Council on Genetics. Genetic evaluation of the child with intellectual disability or global developmental delay: clinical report. Pediatrics. 2025;156(1):e2025072219. doi:10.1542/peds.2025-072219 LJ, Minoche AE, Schofield D, et al. Whole exome and genome sequencing in mendelian disorders: a diagnostic and health economic analysis. Eur J Hum Genet. 2022;30(10):1121-1131. doi:10.1038/s41431-022-01162-2 van de Kamp JM, Betsalel OT, Mercimek-Mahmutoglu S, et al. Phenotype and genotype in 101 males with X-linked creatine transporter deficiency. J Med Genet. 2013;50(7):463-472. doi:10.1136/jmedgenet-2013-101658 Dunbar M, Jaggumantri S, Sargent M, Stockler-Ipsiroglu S, van Karnebeek CD. Treatment of X-linked creatine transporter (SLC6A8) deficiency: systematic review of the literature and three new cases. Mol Genet Metab. 2014;112(4):259-274. doi:10.1016/j.ymgme.2014.05.011
June 8, 2026
39 - Instant insights: How to screen for primary aldosteronism (updated guidelines) (9 min)
In this special episode of Healthier World designed to give you Instant Insights, we take a look at primary aldosteronism (PA)- an often underdiagnosed, yet prevalent cause of hypertension. In this episode, we challenge traditional screening methods and introduce a streamlined diagnostic approach. By recognizing the signs of Primary Aldosteronism earlier, providers can improve patient outcomes and avoid increased risk for cardiovascular and metabolic conditions associated with untreated PA. This episode will Explain the mechanisms underlying PA and how they disrupt the normal renin-aldosterone feedback system (1:50) Highlight the limitations of historic methodology, and describe updated guidance on PA evaluation (3:10) Walk through an example comparing the ARR with the suppressed renin approach for assessing PA (5:50) Explain the cardiometabolic consequences of untreated PA and the importance of proactive screening, particularly in patients with chronic kidney disease (6:50) The content was current as of the time of recording. To learn more, please review the additional resources below for information on our cardiovascular, metabolic, endocrine, and wellness offerings as well as educational resources and insights from our team of experts. At Quest Diagnostics, we are committed to providing you with results and insights to support your clinical decisions. Date: 6/2025 Speaker(s): Maeson Latsko, PhD Contributor(s): Maeson Latsko, PhD; Trisha Winchester, PhD; Millicent Kee, MSN, FNP-BC; Akhil Singh; Smruti Sheth, Marco Marcelli, MD Additional Resources: https://www.questdiagnostics.com/healthcare-professionals/about-our-tests/endocrine-disorders/primary-aldosteronism Ordering information: Plasma Renin Activity with Reflex to Aldosterone | Test Detail | Quest Diagnostics References: Adler GK, Stowasser M, Correa RR, et al. Primary Aldosteronism: An Endocrine Society Clinical Practice Guideline. J Clin Endocrinol Metab. 2025;110(9):2453-2495. doi:10.1210/clinem/dgaf284 Writing Committee Members*, Jones DW, Ferdinand KC, et al. 2025 AHA/ACC/AANP/AAPA/ABC/ACCP/ACPM/AGS/AMA/ASPC/NMA/PCNA/SGIM Guideline for the Prevention, Detection, Evaluation and Management of High Blood Pressure in Adults: A Report of the American College of Cardiology/American Heart Association Joint Committee on Clinical Practice Guidelines. Hypertension. 2025;82(10):e212-e316. doi:10.1161/HYP.0000000000000249 Marcelli M, Bi C, Funder JW, McPhaul MJ. Comparing ARR Versus Suppressed PRA as Screening Tests for Primary Aldosteronism. Hypertension. 2024;81(10):2072-2081. doi:10.1161/HYPERTENSIONAHA.124.22884 Dogra P, Bancos I, Young WF Jr. Primary Aldosteronism: A Pragmatic Approach to Diagnosis and Management. Mayo Clin Proc. 2023;98(8):1207-1215. doi:10.1016/j.mayocp.2023.04.023
41 total episodes available
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Frequently asked questions
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- What is Healthier World with Quest Diagnostics?
<p>Healthier World with Quest Diagnostics aims to prompt action from insight as we keep you up to date on current clinical and diagnostic topics to transform lives and illuminate a path to better health.</p> - How often does this podcast release new episodes?
This podcast updates bi-weekly.
- Where can I listen to this podcast?
This podcast is available on 6 platforms including Apple Podcasts, Spotify, and more. You can also use the RSS feed directly.
- Does this podcast accept guests?
No, this podcast does not typically feature guests.
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