7 Hidden Mistakes 92% of Patients Make Before Blood Tests

Date: 2026-08-30 14:30:30

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There are 7 common mistakes that can throw off your blood test results and most people have no idea they are making them. Just one of these mistakes could inflate your LDL, distort a cortisol reading, or make your kidney function look completely wrong.

Today I walk you through exactly what these mistakes are, why they happen, and what you can do differently before your next blood draw to get the most accurate results every single time.

You’ll learn:
✔️ The fasting mistake that quietly throws off two major panels at once
✔️ Why something that feels healthy right before your blood draw can backfire
✔️ How the time of day you show up can change your results entirely
✔️ The overlooked habit that can distort your kidney and blood cell numbers
✔️ Why what you don’t tell your doctor matters just as much as what you do
✔️ The one thing a single blood draw can never actually catch

Dr. Mitch Rice, DO (Doctor Mitch) is a board certified family medicine physician focused on helping adults reverse insulin resistance, slow aging, and protect the organs that matter most.

⏩ Video Time Stamps:
0:00 Start Here
0:29 Mistake One
1:49 Mistake Two
2:51 Mistake Three
6:19 Mistake Four
7:21 Mistake Five
8:31 Mistake Six
9:17 Mistake Seven

💬 “So whether you eat or drink, or whatever you do, do all to the glory of God.”
— 1 Corinthians 10 v31
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REFERENCES:
ffects of postprandial lipemia on plasma cholesterol metabolism
https://pubmed.ncbi.nlm.nih.gov/3856571/
Muscular exercise can cause highly pathological liver function tests in healthy men
https://pubmed.ncbi.nlm.nih.gov/17764474/
Sleep and circadian regulation of cortisol: a short review
https://pmc.ncbi.nlm.nih.gov/articles/PMC8813037/
Effect of dehydration on blood tests
https://onlinelibrary.wiley.com/doi/full/10.1002/pdi.2111
Biotin interference with troponin lab tests: assays subject to biotin interference (FDA)
https://www.fda.gov/medical-devices/in-vitro-diagnostics/biotin-interference-troponin-lab-tests-assays-subject-biotin-interference
Transient elevation of hepatic enzymes in volunteers after intake of alcohol
https://pubmed.ncbi.nlm.nih.gov/16481283/
Exposure to heavy metals and red blood cell parameters in children: a systematic review of observational studies
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9583003/
Association of mercury exposure with the serum high sensitivity C reactive protein level in Korean adults
https://pmc.ncbi.nlm.nih.gov/articles/PMC10088518/
Heavy metals (StatPearls)
https://www.ncbi.nlm.nih.gov/books/NBK557806/
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The information provided in this video is for educational and informational purposes only and is not intended as a substitute for professional medical advice, diagnosis, or treatment. Always consult your physician or qualified healthcare provider with any questions you may have regarding a medical condition. Never disregard professional medical advice or delay seeking it because of something you heard or saw here.

*Some of the links above may be affiliate links, which means I may earn a small commission if you choose to purchase through them at no extra cost to you. I only recommend products I trust and use with my own patients.