Conditions
Supplements and Blood test in the next few days
Critical
Biotin causes false lab results. High-dose biotin interferes with many immunoassays — including thyroid hormones and troponin (heart attack test). Stop it several days before blood work and tell the lab.
Note
Biotin in multivitamins can affect lab tests. Many multivitamins contain biotin, which can distort some blood tests such as thyroid tests. Tell whoever orders your test.
Creatine raises blood creatinine. This can look like reduced kidney function on routine labs. Tell your doctor you take it.
DHEA changes hormone test results. It raises measured testosterone and estradiol. Tell whoever orders your blood test that you take it.
Common questions
What should I check about Biotin and Blood test in the next few days?
Biotin causes false lab results. High-dose biotin interferes with many immunoassays — including thyroid hormones and troponin (heart attack test). Stop it several days before blood work and tell the lab.
What should I check about Multivitamin/mineral and Blood test in the next few days?
Biotin in multivitamins can affect lab tests. Many multivitamins contain biotin, which can distort some blood tests such as thyroid tests. Tell whoever orders your test.
What should I check about Creatine and Blood test in the next few days?
Creatine raises blood creatinine. This can look like reduced kidney function on routine labs. Tell your doctor you take it.
What should I check about DHEA and Blood test in the next few days?
DHEA changes hormone test results. It raises measured testosterone and estradiol. Tell whoever orders your blood test that you take it.