Medical-boundary review for checkup planning and common marker pages

[casperukee]

The checkup pages are high-value but also easy to overstate. They need a focused medical-boundary pass.

Pages:

• content/zh-CN/handbook/playbooks/checkup-planning-guide.md
• content/zh-CN/handbook/playbooks/common-checkup-markers.md
• content/zh-CN/book/part-1-healthspan-risk-and-markers/checkup-markers.md

Review points:

• China-specific project names and hospital wording are understandable.
• Reference ranges are framed as common ranges, not individual treatment targets.
• Screening vs diagnosis vs follow-up is clear.
• CT, enhanced CT, ultrasound, PSA, HPV/TCT, FIT/便隐血 and tumor-marker wording does not invite unnecessary testing or self-diagnosis.
• Accepted changes are recorded in review log when medically material.

[casperukee]

Anonymized feedback context

Checkup pages have received repeated feedback because this is one of the most concrete reader needs. The main request is not just principles, but help translating real Chinese checkup packages and reports into understandable next questions.

Feedback-derived requirements:

• Use China-facing checkup item names where possible: 血常规、尿常规、肝肾功能、血脂、空腹血糖、糖化血红蛋白、尿酸、腹部彩超、心电图、低剂量胸部 CT、HPV/TCT、便隐血/FIT、PSA/前列腺超声等.
• Explain confusing boundaries: low-dose chest CT vs enhanced CT, carotid ultrasound vs CTA/MRA/angiography, tumor markers vs cancer screening, screening vs diagnosis.
• Keep reference ranges framed as common report context, not personal treatment targets.
• Avoid a separate checklist for every age/sex scenario; use age bands + risk add-ons + doctor discussion prompts.

Suggested validation:

• Test the page against 2-3 real Chinese checkup package menus.
• Test it against one real anonymized checkup report.
• Ask a clinician whether any wording could encourage over-testing, delayed care, or false reassurance.