Pages tagged with "Tests"

147 pages, most important first (overviews, then meta-analyses, then RCTs, then newest). Combine with another topic

• Vitamin D testing typically not needed, but in 9 cases it is
• Consultation to medical professionals on Vitamin D Testing
• Panel Discussion on Vitamin D and Tests - 2011
• Saliva and Vitamin D – many studies
• Endocrine Society recommends Vitamin D to 2 billion people - no test needed
• 50,000 IU monthly safe to take without any vitamin D testing – RCT
• Chronic Kidney Disease reduced with 3600 IU vitamin D (50000 twice a month)– RCT
• Vitamin D tests assume constant Binding Protein - not correct across races and clinical situations
• Blood tests can be a poor measure of actual vitamin D due to D Binding Protein (DBP)
• One test to estimate Vitamin D, A, Cu, Se, etc : measure proteins in blood
• All of Us now has health data on 740,000 in the US (but little on Vitamin D)
• Vitamin D blood testing in Pharmacies in Austria - started in 2024
• Chair-side vitamin D test for 80 nmol: $13
• Before tooth implant, German dentists would routinely test vitamin D levels, govt. told them not to
• Vitamin D tests: current and future (no blood spot, no Y/N) - June 2026
• Vitamin D home tester wanted – 50, 000 dollar prize offered by Nestlé
• How can I determine if a person is vitamin D deficient?
• VA showed increased vitamin D associated with lower health costs - Lancet
• Saliva still cannot be used to test for Vitamin D
• Canadians – 37 percent have less than 20 ng of vitamin D (after adjusting test results with standards)
• Tests for Vitamin D
• Vitamin D qualitative tests are Y/N 30 ng, higher levels appear possible
• DNA swab tests detect about 1 in 10 of actual gene problems
• What is a significant vitamin D level change: ~8 if at 30 ng, ~18 if at 50 ng
• Vitamin D measurements vary from the same blood sample
• Successful trial of instant Vitamin D testing in pharmacies (Austria, 10 dollars)
• Vitamin D tests using smartphone, etc. - 2022
• Quick, FREE, self-test for Vitamin D deficiency
• DNA and VDR tests - 100 to 200 dollars
• Vitamin D test result can vary by 40 ng (10 reasons)
• Low-cost Vitamin D testers (two yes-no tests for 11 dollars) - 2024
• Find out if you might be vitamin D deficient for free - 2 minutes, 11 questions
• Endocrine Society recommends for the healthy: no Vitamin D tests, just RDA (many object)
• Huge differences between Vitamin D test results: CLIA, LC-MS, and home
• Testing vitamin D in urine may be possible
• Vitamin D is increasing in Greece: testing, supplementation, and levels
• Low cost vitamin D Blood Tests
• Active Vitamin D (Calcitriol) reference ranges, why too high is a problem
• Vitamin D tester based on villi absorption in intestines found to be extremely sensitive
• How to compare Vitamin D measurements from multiple studies
• Instant Vitamin D testing aided by a smartphone has 90 percent accuracy
• Test Vitamin D, get a tiny dose, no benefit, conclusion: should not have tested (Australia this time)
• Instant vitamin D Yes-No test now available
• Long-haul COVID-19 blood tests at Mayo include vitamin D (but no results published)
• California Hospitals: If staff tests positive for COVID but is asymptomatic, just keep working
• Skin impedance might be a rough measure of Vitamin D
• 42X increased vitamin D testing of children, no increase in levels (too little vitamin D prescribed to make a difference)
• Vitamin D deficiency of a group - 15 pcnt to 48 pcnt (depends on tester used)
• Vitamin D testing accuracies, including dried blood spot
• 4 popular vitamin D testers gave very different results (no surprise)
• Greatly improved Vitamin D testing repeatability
• Problems with Vitamin D Testing – chapter
• Cancer patients at high risk of vitamin D deficiency were not tested as often (paradoxically)
• Instant, low-cost Vitamin D test kits available - UK Amazon
• Excessive lipids in blood can result in very low vitamin D test results
• Warning – Medicare will pay for just 1 vitamin D test PER LIFETIME (if not related to a few diseases)
• Huge variation in Vitamin D test results between 4 testers for 8 people – 2013
• Vitamin D testers have different test results if there is chronic kidney disease
• Several governments have restricted Vitamin D testing (hard to associate low D with COVID-19)
• Vitamin D test results vary as much as 30 ng between test labs
• Vitamin D test results still vary by about 9 percent
• Vitamin D testing by prototype optical waveguide using Smartphone
• Vitamin D test using electrospun nanofibers (looks promising)
• UK considers Vitamin D tests appropriate for only 4 existing health problems,
• Low trauma bone fractures in seniors – considering Vitamin D loading dose for all, without testing
• Hypothesis – Optimize vitamin D at home by measuring excess Calcium in urine
• Vitamin D levels vary across the brain, what about other body tissues
• Excessive vitamin D testing in Australia
• Big differences (~10 ng) in vitamin D test results, even when using the same type of tester
• Vitamin D may be a magic bullet for the cells (not based on Vitamin D blood tests)
• Epimers of Vitamin D: A Review
• Vitamin D tests for Canadian BC adults can only be ordered by specialists
• 94 X increase in Vitamin D testing in Australia (2000-2010, then they shut it down)
• 80 X increase in Vitamin D testing in Australia in a decade
• Flu vaccinations during pregnancy should NOT be the standard of care until tests show it is OK
• Magnesium, Vitamin D, Omega-3, TSH - importance and testing - Dean and Baggerly
• DBP-L is 8 times higher with Bipolar Disorder, but might be invisible to most tests
• Body impedance can estimate body fat, and perhaps Vitamin D
• Vitamin D levels observed to vary by 20 percent during a day
• Percent who are Vitamin D Deficient: 6, 9, or 22 – depends on testing system
• UK (NHS) now provides blood taking at home (Vitamin D, panel, etc.)
• BMD associated with free and bioavailable vitamin D
• Crohn’s Disease Activity predicted by vitamin D plus 2 additional blood tests
• Vitamin D compliance 3X higher when children with fractures actually knew their low vitamin D level
• Mandatory Vitamin D screening for all patients – vitamin D conference in Middle East
• Australians paying for most Vitamin D tests, 40 percent deficient in winter
• Which children need Vitamin D tests (no consensus, should give Vit D to all)
• Health Insurance (UnitedHealth) restricting Vitamin D payments to only a few diseases
• Child died in hospital, death due to low vitamin D, mother is suing hospital
• Vitamin D clinical trials should be based on Vitamin D tests
• Vitamin D testing at home – for as little as 50 dollars on Amazon
• Some employers offer vitamin D testing, some doctors reduce doses, even if deficient
• Vitamin D tester by Cue: consumables only 4 dollars per vitamin D test – Spring 2015
• Results of many blood tests in Australia – deficiencies only in Vitamin D, Iodine, and Vitamin B-12
• Who needs a vitamin D test -Those with symptoms or those in high risk groups
• Hypothesis: Should test for unactivated Vitamin D, not activated
• Vitamin D testing in Spain increased 3X in 2 years (considering 28,000,000 people)
• More hospitals or more Vitamin D – your choice
• France restricts Vitamin D testing to 4 health problems, paper proposes 5 more
• Vitamin D testing AND levels are increasing in Australia (NSW)
• Childhood allergy, asthma and eczema associated with repeated low vitamin D tests
• Vitamin D test costs reimbursed in Japan
• Japanese need at least 30 ng of Vitamin D, test costs are now reimbursed
• Vitamin D Testers coming soon (low cost and easy)
• France restricts payments for Vitamin D tests
• How should Vitamin D be tested – a changing landscape
• If you are obese, use sunscreen, or don't drink milk you may be vitamin D deficient
• Zika tests for all Jamaican pregnancies
• Zika tests of asymptomatic pregnancies give poor results – so don’t test
• How Alberta Canada restricts Vitamin D testing
• Pregnancy – major changes in vitamin D metabolites
• Vitamin D estimation– possibly use infrared to estimate vitamin D general range
• Vitamin D test costs Obamacare pregnant woman 214 dollars (vs 6 dollars for a bottle)
• Vitamin D deficiency can sometimes be inferred by Autofluorescence of skin - 2015
• Vitamin D – whom to test and whom to treat
• Vitamin D measurement at home with dried blood spot had a 71 percent successful return rate
• Wrong vitamin D test continues to be ordered - 66 percent of active Vit D tests were not wanted
• Medicare now pays for just one vitamin D test , but 20 CT scans for smokers
• Task force confirms - not much benefit from low Vitamin D supplementation
• 80 percent of young adults had low vitamin D tests in Mumbai India - 2011
• After 245,000 free vitamin D tests, 121,000 supplemented, but only 5,400 had 2nd test
• Off topic: Ebola: fast tests being developed
• Technical comparison of vitamin D testers
• 20 percent change in vitamin D levels of critically ill during a 24 hour period
• Bone tenderness weakly associated with vitamin D levels
• Virtually all vitamin D testing not associated with a symptom, but 10 percent had osteoporosis
• No vitamin D test needed before supplementing (typically)
• No longer debating vitamin D supplementation, now debating need for testing first
• Vitamin D testing demand so high that some Canadian provinces have stopped paying
• One of the 4 vitamin D metabolites increases faster than the others
• Vitamin D test statistics: recent increase, esp. middle age, most under 30ng
• Increased vitamin D testing did not result in increased bone density
• New Zealand GPs being asked for vitamin D testing and prescriptions
• Vitamin D tester falsely said half of hemodialysis patients had less than 30 ng
• Active level of vitamin D are not indicated by standard blood tests
• Vitamin D testing in Australia - huge increase in 11 years
• 10X increase in vitamin D tests in Australia – time for the doctors to learn about vitamin D
• Calcium levels can be measured with ionized calcium tests
• Only 13 percent decrease in vitamin D in 13 years
• Mayo clinic providing free vitamin D tests for blacks in Florida
• The many forms of vitamin D in the blood
• Day to Day blood test variation less than 8 percent
• Vitamin D measurements of individuals vary by 3 ng within 6 days
• Incredible – Obstetrics group says pregnant women not need vitamin D tests
• Vitamin D serum prediction based on IU skin color and BMI
• Only 15 percent change in vitamin D measurements in same month
• Diurnal variation in blood levels noted for post-menopausal women – 2002