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Doctor insights on: Fasting Blood Test For Liver Function

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What blood test checks for pancreatic enzymes?

What blood test checks for pancreatic enzymes?

Amylase & lipase: These check for the enzymes to see if they're being released into the blood when somebody has an upper abdominal emergency. If you're concerned you haven't got enough pancreatic enzymes, a stool assay for pancreatic elastase might be more helpful. ...Read more

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Dr. Charlene Sojico
2 doctors shared insights

Liver (Definition)

This organ plays a major role in metabolism and has a number of functions in the body, including glycogen storage, decomposition of red blood cells, plasma protein synthesis, hormone production, and detoxification. It lies below the diaphragm in the abdominal-pelvic region of the abdomen. It produces bile, an alkaline compound which aids in digestion via the emulsification of ...Read more


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Does a blood test for renal function need fasting beforehand?

Does a blood test for renal function need fasting beforehand?

Kidney blood test: No, if you are checking for creatinine and BUN levels, you do not to be fasting before your blood sample is taken. ...Read more

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Blood test results showed elevated liver enzymes and elevated kidney function. What does this mean?

Blood test results showed elevated liver enzymes and elevated kidney function. What does this mean?

Need for evaluation: It is not feasible to provide a meaningful opinion without taking a history, physical examination, looking at the actual lab results and may be additional studies. Lab results need to be interpreted in the clinical context and the doctor who ordered the tests is in the best position to do that. ...Read more

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Would blood tests for gloucose and thyroid reveal liver ussues?

Would blood tests for gloucose and thyroid reveal liver ussues?

No: There are specific tests for liver function and those are different from glucose and thyroid function tests. ...Read more

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Would regular two month blood donation affect bilirubin, albumin and other liver function bloodwork? wouldnt the blood loss skew the LFT numbers?

Would regular two month blood donation affect bilirubin, albumin and other liver function bloodwork? wouldnt the blood loss skew the LFT numbers?

No: http://www.bloodcenters.org/blood-donation/facts-about-blood-donation/ The major side effect from donating blood frequently is low blood iron and anemia. LFTs are not likely to be affected. See the site above information about blood donation. ...Read more

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Does psa blood test need fasting?

Does psa blood test need fasting?

No. For most blood: fasting is not needed & commonly misleading, though promoted. Optimal PSA value <1.0 ng/dL, though called normal up to 4.0 ng/mL. At 1.3 ng/ml (Avodart Trial; most thorough done to date) prostate size, by ultrasound, has doubled young healthy values. If PSA < 1.0, prostate cancer extremely rare. If elevated, consider https://www.accureference.com "Prostate Health Index" test for better guidance. ...Read more

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Blood tests of levels pancreadits?

Blood tests   of levels  pancreadits?

Pancreatitis: Typical tests done include amylase and lipase. Amylase can be elevated due to other problems, so lipase is more specific. Any elevation indicates a problem. Lab values are specific to the lab used. Severe pancreatitis can elevate the lipase into the 1000's. Even a small elevation above normal can cause severe pain. ...Read more

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I was wondering does the comprehensive metabolic panel blood test also test for blood sugar levels?

Yes: See this site for a list of the things tested in a CMP. https://www.nlm.nih.gov/medlineplus/ency/article/003468.htm ...Read more

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What do these blood tests mean: cmb, cmp, fasting lipid panel?

Various lab test: Cmp: comprehensive metabolic panel: tests for a variety of different metabolites and studies activity of certain enzymes. The lipid panel is used to test cholesterol, high and low density lipids and lipoproteins. In general, theres are screening tests, and are not necessarily drawn for a specific reason. Without knowing your clinical information, it is tough to give guidance. ...Read more

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my blood test showed abnormal liver enzymes and elevated pancreatic enzymes. Hepatitis negative. I don't drink alcohol. Ultrasound and CT negative. ?

 my blood test showed abnormal liver enzymes and elevated pancreatic enzymes. Hepatitis negative.  I don't drink alcohol. Ultrasound and CT negative. ?

Other causes: Amylase, Lipase and liver enzymes can be elevate, due many other reasons such as acute cholecystitis, biliary sludge, chronic pancreatitis or even drug induced. Imaging does not necessarily pick up small gallstones or biliary sludge. Also, clinical symptoms need to be correlated with your lab work to narrow down the diagnosis. Are you having jaundice, abdominal pain, diarrhea, cramps, etc? ...Read more

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Which test is more reliable for monitoring diabetes: a blood sugar test or urine sugar test?

Which test is more reliable for monitoring diabetes: a blood sugar test or urine sugar test?

Bllod sugar: Glucose appears in urine only when blood sugar is greater than (debate) 180-220. Would like to aim for sugars 80-150 for good control. So can still be in 150-180 range, chronically, and still be in less than ideal control without any sugar appearing in urine. ...Read more

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How much blood is drawn for a fasting lipids test?

How much blood is drawn for a fasting lipids test?

No more than 10 ml: About one ml of serum is needed for the test and 4-5 ml will usually suffice. ...Read more

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Blood test shows élévated bilirubin , urine test négative for bilirubin. Any explanation??

Blood test shows élévated bilirubin , urine test négative for bilirubin. Any explanation??

Unconjugated: Bilirubin exists in the blood in both the conjugated and Unconjugated forms. Only the conjugated can enter the urine. If you feel well, and this is new, you very likely have Gilbert's non-disease. Best wishes. ...Read more

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Can exercising before blood test affect results? Fbc, lymphocyte flow studies, esr, crp, LFT, lipase, amylase? Can exercise before test make feel ill?

Can exercising before blood test affect results? Fbc, lymphocyte flow studies, esr, crp, LFT, lipase, amylase? Can exercise before test make feel ill?

Exercise: As a boon to long term health, exercise has value. But normal ranges for almost all lab tests are established on resting individuals. Some values are known to go up (such as some liver functions) while others may vary depending on the intensity and degree of dehydration. Abnormals should be treated cautiously and perhaps repeated without the prior activity. ...Read more

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Had blood test for liver function about 1 month ago. All was normal. Had another blood test and there is a slight abnormality with liver function. Why?

Had blood test for liver function about 1 month ago. All was normal. Had another blood test and there is a slight abnormality with liver function. Why?

Liver: Itdepends on what you mean by 'slight'. If it a variance less than 10% I wouldn't worry about it. Lab tests can vary a bit even over a 12 hour period. Liver tests can vary because of various OTC drugs like Tylenol (acetaminophen) or alcohol. The body is a dynamic system so don;t expect static numbers on tests ...Read more

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Dr. Tso Chen
244 doctors shared insights

Liver Function (Definition)

The liver is "life". The liver not only creates essential proteins and energy resources, but it also "detoxifies" the body through creation of elements like bilirubin while additionally breaking down a vast variety of chemicals (medications, toxins, etc.). The medical industry tests the "function" of the liver via a "liver function panel". This test looks at liver ...Read more