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Doctor insights on: Retinol Test

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Dr. Lourdes Margarita Landron-Garcia
431 doctors shared insights

Vitamin A (Definition)

Vitamin A helps form and maintain healthy teeth, skeletal and soft tissue, mucous membranes, and skin. It is also known as retinol because it produces the pigments in the retina of the eye. Vitamin A promotes good vision, especially in low light. It may also be needed ...Read more


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3 days late 2posative clear blue digital test 1negative cheap test a negative doctor test. Am i pregnant?

If doubt then : There is not a way that we can tell you if you are pregnant if you have done one test that is positive and one that is negative. We would simply be guessing which test is correct. In this case you will need to see a doctor for a blood bhcg test. ...Read more

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Should i test homeopathic hCG drops using a OTC pregancy test?

Should i test homeopathic hCG drops using a OTC pregancy test?

No: Homeopathic remedies are prepared in very minute quantities. Otc pregnancy tests are likely to give unreliable results detecting so-called "homeopathic hcg." also, this form of HCG is not an approved homeopathic remedy and the fda withdrew it from the market in late 2011. http://www.fda.gov/newsevents/newsroom/pressannouncements/ucm282334.htm. ...Read more

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Would these cause a positive ETG test . Cetyl, Stearyl, Cetearyl alcohols. Panthenol, Phenoxyethenol, Butylene Glycol, Propanol, Propylene Glycol. ?

Would these cause a positive ETG test .
Cetyl, Stearyl, Cetearyl alcohols. 
Panthenol, Phenoxyethenol, Butylene Glycol, Propanol, Propylene Glycol.
?

Only ethanol makeEtG: Those compounds aren't metabolized to EtG. Food products (vanilla), hygiene products, mouthwash, or OTC medications (cough syrups) containing ethanol can cause EtG levels to exceed 100 ng/mL but not 500 ng/mL. If measurable ethanol is detected (greater than .04 gm%) in the urine & EtG is >250 ng/mL, or if EtG > 500 ng/mL, then this is very strong evidence that beverage alcohol was consumed. ...Read more

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5 positive home pregnancy test 2 different brands negative blood test still getting a positive in home test lines very slowly getting darker ?

5 positive home pregnancy test 2 different brands negative blood test still getting a positive in home test lines very slowly getting darker ?

Blood test for HCG: Given the discrepant results with hpt, it would be useful to see your doctor and get a blood test for HCG levels, it is more sensitive and specific than hpt. Alternatively could wait 4-5 days to repeat hpt. Use first morning urine and follow the instructions for the test carefully. If you do not wish to be pregnant, use contraception all the time, every time. You may consider implanted contraceptive, or IUD. Practice safe sex. Get HPV vaccine. ...Read more

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Would a 10miu hCG test pick up pregnancy 3 weeks?

Would a 10miu hCG test pick up pregnancy 3 weeks?

Depends on the type: Of test. Blood tests measure actual levels of HCG and can detect 10 u. Urine tests are generally designed to read positive at a level of 25 u. If by 3 weeks you mean three weeks from the last menstrual period, it is likely too early to test. You should wait after a missed period to test for pregnancy. ...Read more

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3 days late, a few pg symptoms, negative digital test but faint positive regular urine test. 8 pregnancies, 4 kids. Are these test results common?

3 days late, a few pg symptoms, negative digital test but faint positive regular urine test.   8 pregnancies, 4 kids. Are these test results common?

Need to repeat test: Please repeat the test in 4-5 days. Use first morning urine and follow the instructions for the test carefully. If you do not wish to be pregnant, use contraception all the time, every time. You may consider implanted contraceptive, or IUD. Practice safe sex. ...Read more

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Positive (faint line) home pregnancy test 2/18, urine test at doc. Confirmed pregnancy. Home test again 2/22 still very faint + line, is this normal?

Positive (faint line) home pregnancy test 2/18, urine test at doc. Confirmed pregnancy. Home test again 2/22 still very faint + line, is this normal?

Yes: I would be concerned if home test went from positive to negative. If you're having a lot of anxiety over this see if your doctor will repeat your serum pregnancy test in a few days, but i would not worry too much. It won't help to be overly stressed. ...Read more

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Is a IgG quantitative test same as the serum protein electrophoresis test?

Is a IgG quantitative test same as the serum protein electrophoresis test?

Blood tests: They are two different separate blood tests, spep serum protein electrophoresis test is a screening test for plasma cell disorders like mgus, smoldering or full blown myeloma and quantitative igg is a blood test to quantify the amount of igg in blood. Usually more than 3 grams is significant in blood. ...Read more

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Hcg 50 positive blood test two negative urine please help.

Hcg 50 positive blood test two negative urine please help.

Recheck blood: You need to have the blood levels checked again. You expect the level to about double in 2 days with a normal pregnancy. ...Read more

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What are clia waived test strips?

What are clia waived test strips?

Government rules: The U.S. Government has thousands and thousands of regulations. Some simpler lab tests are put into the government's "clia waived" category, and has no special meaning to a patient. ...Read more

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Is my white skin protected from sun rays if I use the following: vitamic C serum, then bioderma moisturizer spf 30 and la roche posay powder spf 25?

Is my white skin protected from sun rays if I use the following: vitamic C serum, then bioderma moisturizer spf 30 and la roche posay powder spf 25?

SPF 30 and SPF 25: Both the bioderma moisturizer and la roche posay powder are effective sunscreen. May need to reapply products if out in sun for multiple hours. No need to use vitamin C serum on skin- vitamin C is not a sunscreen. Also avoid outdoors from 10 am to 2 pm as sun is most intense during these hours. ...Read more

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I took 7 home pregnancy test all positive but doctor test say negative and blood test was negative why?

I took 7 home pregnancy test all positive but doctor test say negative and blood test was negative why?

Please clarify: Perhaps the reason can be known when you tell us honestly why you kept testing at home even though the test told you a positive answer. Something must have clued you into the fact something was not normal. You tell us. ...Read more