New FDA-approved blood tests for diagnosing Alzheimer's disease

These blood tests offer a less expensive and less invasive option for helping to diagnose Alzheimer's disease.

In May 2025, the U.S. Food and Drug Administration (FDA) approved the first blood test as a tool to help diagnose Alzheimer's disease. The test is called Lumipulse.

How does the FDA-approved blood test for Alzheimer's disease work?

The Lumipulse test uses a blood sample drawn at the doctor's office. The test measures certain proteins, including a specific form of the tau protein, that can indicate the presence of amyloid plaques in the brain. An amyloid plaque is a buildup of protein that is considered the hallmark sign of Alzheimer's disease.

This blood test, along with other diagnostic tools such as a PET scan, can help diagnose Alzheimer's disease. While the blood test can detect changes even before memory problems begin, it is recommended to only be used clinically in people who show symptoms of Alzheimer's disease.

Usually, you'll get results from the test within about 2 to 5 days.

Why is the new blood test for Alzheimer's disease important?

Previously, the only tests to detect amyloid plaques were a PET scan and lumbar puncture. In a lumbar puncture, a sample of cerebrospinal fluid (CSF) is taken from the spinal column. These tests can be expensive, and a lumbar puncture is invasive.

How accurate is the test?

Some studies have shown that the Lumipulse test is over 90% accurate in detecting Alzheimer's-related changes. However, the test is still being refined and can't diagnose Alzheimer's disease on its own. The Lumipulse test is meant to be part of an evaluation for Alzheimer's disease, including physical and medical history and imaging scans of the brain.

The accuracy rate is different between Lumipulse and other blood tests used to help diagnose Alzheimer's disease. You should discuss with your healthcare professional which test is most appropriate for you.

Who should consider taking the test?

This test is approved for adults age 50 and older who have early memory or thinking problems, such as forgetting names, misplacing things or repeating questions.

It's not yet recommended for general screening in people with no symptoms. You and your healthcare professional can decide if this test is appropriate for you.

What do the results mean?

A positive result means there are changes in your brain that may suggest Alzheimer's, but these results alone don't mean that you have the disease. Your healthcare professional may:

  • Recommend more tests, such as imaging scans or tests of your memory and thinking.
  • Suggest lifestyle changes to support brain health.
  • Help you plan next steps, including treatment options or clinical trials.

How do I get this test?

If you and your healthcare professional decide that a blood test is appropriate for you, it can be ordered in your health professional's office.

Should I talk to my healthcare professional about this test?

Talking with your healthcare professional can help you:

  • Understand what the test can (and can't) tell you.
  • Decide if it's the right time for testing.
  • Make a plan for what to do with the results.

You can mention it during your annual checkup or make a separate appointment.

What questions should I ask my healthcare professional?

  • Do you think this test is right for me? Why or why not?
  • What are the risks or downsides of getting the test?
  • What would we do if the test shows signs of Alzheimer's?
  • Is this test covered by insurance or an out-of-pocket expense?
  • Are there other tests I should consider instead — or along with it?

How much does the new Alzheimer's blood test cost?

Cost depends on a number of factors, including where you live and lab fees. Insurance coverage varies based on your insurance carrier and plan. The cost of the test, however, is expected to be less than the costs of current options such as amyloid-PET imaging or CSF biomarker tests.

What if my healthcare professional hasn't heard about the test?

This test is still new and may not be widely offered yet. If your healthcare professional isn't familiar with it, you can ask for:

  • A referral to a memory specialist or neurologist.
  • A second opinion at a clinic that offers early detection or research studies.
July 08, 2025 了解更多深度信息

也可查阅

  1. 阿尔茨海默病的睡眠问题
  2. 阿尔茨海默病:新疗法
  3. 阿尔茨海默病 101
  4. 了解痴呆症类型之间的差异
  5. 阿尔茨海默病
  6. 阿尔茨海默病的基因
  7. 阿尔茨海默病药物
  8. 阿尔茨海默病的预防:是否有方法?
  9. 阿尔茨海默病各阶段
  10. 抗抑郁药戒断症状:是否存在这样的疾病?
  11. 抗抑郁药和酒精:有什么顾虑?
  12. 抗抑郁药与体重增长:是什么原因导致的?
  13. 抗抑郁药:它们是否会不起作用?
  14. 抗抑郁药:副作用
  15. 抗抑郁药:选择适合您的抗抑郁药
  16. 抗抑郁药:哪一种药引起的性副作用最小?
  17. 焦虑障碍
  18. 非典型抗抑郁药
  19. 临床抑郁症:这是一种什么疾病?
  20. 皮质基底节变性(皮质基底节综合征)
  21. CT 扫描
  22. 抑郁症和焦虑症:是否可能同时患上?
  23. 抑郁、焦虑和运动
  24. 什么是抑郁症?妙佑医疗国际专家为您解答。
  25. 女性抑郁症:了解性别鸿沟
  26. 抑郁症(重度抑郁障碍)
  27. 抑郁症:为家人或朋友提供支持
  28. 诊断阿尔茨海默病
  29. 阿尔茨海默病的定义是否已改变?
  30. 脑工作原理
  31. 间歇性禁食
  32. 使用仑卡奈单抗治疗阿尔茨海默病
  33. 男性抑郁症:了解这类问题
  34. MAOI 和饮食:有必要限制酪胺摄入吗?
  35. 大麻和抑郁症关联
  36. 妙佑医疗国际一分钟:降低患阿尔茨海默病风险的 3 点建议
  37. 妙佑医疗国际一分钟:阿尔茨海默病风险和生活方式
  38. 妙佑医疗国际一分钟:阿尔茨海默病定义新变化
  39. 妙佑医疗国际一分钟:女性与阿尔茨海默病
  40. 记忆丧失:何时寻求帮助
  41. 单胺氧化酶抑制剂(MAOI)
  42. 磁共振成像
  43. 治疗抑郁症的自然疗法:它们有效吗?
  44. 精神崩溃:这意味着什么?
  45. 阿尔茨海默病新研究
  46. 疼痛和抑郁症:有联系吗?
  47. 幻嗅觉:导致幻嗅觉的原因是什么?
  48. 正电子发射断层扫描
  49. 后部皮质萎缩
  50. 借助 MRI 查看心脏内部情况
  51. 选择性血清素再摄取抑制剂(SSRI)
  52. 血清素和去甲肾上腺素再摄取抑制剂(SNRI)
  53. 日落综合征:晚间混乱
  54. 难治性抑郁症
  55. 三环类抗抑郁药
  56. 视频:阿尔茨海默病药物显示早期前景
  57. MRI
  58. 维生素 B-12 和抑郁症
  59. 早发型阿尔茨海默病