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Doctor insights on: Is It True That A Blood Smear Can Provide More Accuracy Then A Cbc

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Complete Blood Count (Definition)

Share on twitter bookmark & share printer-friendly version a complete blood count (CBC) test measures the following: •the number of red blood cells (rbc count) •the number of white blood cells (wbc count) •the total amount of hemoglobin in the blood •the fraction of the blood composed of ...Read more


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Is it true that a blood smear can give you ore accurate results than a cbc?

Is it true that a blood smear can give you ore accurate results than a cbc?

Yes: Yes a pathologist two reviews) furl smear and who has a good knowledge of the red blood cell cytology and the value limits of high and low can tell you the white blood count red blood count and platelet count and also evaluate each cell each type of the white blood cells and the red blood cells whether they are too big or too little whether they're being broken down or made normally. ...Read more

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Is there a blood glucose monitor that does not require a prick to get results?

Is there a blood glucose monitor that does not require a prick to get results?

Sorry, no: At this time, real time blood sugar monitoring requires capillary blood, which involves a needle prick. Some meters allow for use on palms an thighs, but the result is less accurate. Continuous glucose monitors can check bgs every 5 min to let your dr see 'the overall trend' over several days, but even then you still have to check finger stick 2-4 times daily to calibrate the monitor... ...Read more

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Is the hep b titer just drawing blood and sending it to a lab to test or is there another part to it (i heard there is a surface antigen test as well)?

Is the hep b titer just drawing blood and sending it to a lab to test or is there another part to it (i heard there is a surface antigen test as well)?

Hepatitis B Testing: Yes. These are simple blood tests. Nothing to worry about. Given your age you were most likely vaccinated as a baby to hepatitis b. These started in the early 1980s for all children and was one of the mandatory childhood vaccinations. ...Read more

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Blood test for pregnancy came positive is it 100% accurate? Will i actually see a baby in the ultrasound? Is it possible nothing will there too?

Blood test for pregnancy came positive is it 100% accurate? Will i actually  see a baby in the ultrasound?  Is it possible nothing will there too?

Pretty accurate: Those pregnancy tests are very accurate. They detect elevated levels of hormone that indicate pregnancy. It is possible to have a positive test when in fact you're not pregnant, but the causes of that are very rare, such as hormone secreting tumors. In nearly every circumstance, there will be something there on the ultrasound. ...Read more

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Is it possible for a first response digital test to have detected some HCG but not enough? I'm asking because I received a question mark as a result

Is it possible for a first response digital test to have detected some HCG but not enough? I'm asking because I received a question mark as  a result

Possible: You may wish to repeat the test in 3-4 days, if you do not get your period by then. Use first morning urine and follow the instructions in the kit carefully. ...Read more

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Is a blood test the definitive answer as to whether a person has a thyroid disease?

Is a blood test the definitive answer as to whether a person has a thyroid disease?

It depends: Blood tests tell many things about the thyroid, including whether it's overactive (hyperthyroid) or underactive (hypothyroid). They detect anti-thyroid antibodies as well. These things cannot be confirmed without blood tests. Other thyroid diseases, such as nodular disease and cancer cannot be identified alone by blood test but require physical exam, possibly ultrasound, and possibly biopsy. ...Read more

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Is it possible to get the results of a blood pregnancy test in less that 20 min. or does it take longer to process?

Is it possible to get the results of a blood pregnancy test in less that 20 min. or does it take longer to process?

Depends where: Doing the test itself is fast but unless your doctor is processing blood work in the office it probably is being referred out to an outside lab company. Doing a urine test is much faster and can detect pregnancy with a BHCG of > 20. This means it only misses pregnancy in the first few days after conception ...Read more

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Is it best to take a urine or blood test for pregnancy if the woman is anemic? Which one will give you an accurate result?

Is it best to take a urine or blood test for pregnancy if the woman is anemic? Which one will give you an accurate result?

Both are fine: Urine and blood pregnancy tests are both quite accurate. Anemia does not change this. Blood pregnancy tests are only used if a patient feels like they are pregnant and urine tests keep showing up negative. ...Read more

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How accurate is this test or is it a scam a prenatal paternity test that doesn't involve any invasive as the baby's DNA can be found within mums blood?

How accurate is this test or is it a scam a prenatal paternity test that doesn't involve any invasive as the baby's DNA can be found within mums blood?

Ask lab: There are several commercially available test to perform non-invasive fetal genetic testing. Ask the lab what the accuracy of the test you are considering is. This should be readily available information from the company that makes the test. ...Read more

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After a hysterectomy, can blood tests for std's be performed at a STD testing site that is not the physician's office? Is it common enough?

After a hysterectomy, can blood tests for std's be performed at a STD testing site that is not the physician's office? Is it common enough?

Yes.: Today full std testing can be done via blood test only, there is no longer need to obtain any genital swabs or even urine samples. The hysterectomy would make no difference in any case. You can ask your regular family physician to test you, for peace of mind, or possible exposure, and ask them to draw the blood for the test. It's that simple. ...Read more

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What does a 9.9 on a herpes IGG test mean? That number is higher than other results posted in forums so I wanted to see if that is a normal result.

What does a 9.9 on a herpes IGG test mean? That number is higher than other results posted in forums so I wanted to see if that is a normal result.

Depends on test: There are several HSV IgG antibody tests, with different numbers for positive results. The most common is HerpeSelect®, for which 9.9 is strongly positive. For other tests this may be negative. If you have the lab report, it should show numbers for negative, indeterminate, and positive, separately for HSV1 and HSV2. Or contact and discuss with the doctor or lab where test was done. Good luck! ...Read more

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I got my blood drawn for a hep b titer. My doctor sent it in for a surface antibody test only. Is that enough or is their more tests needed?

Yes: I'm going to assume that acute or chronic infection is not a concern and you merely had to be shown to be immune. If you are not, you may be (re)immunized or get more testing. ...Read more

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If a person is willing to do a blood test for HIV is that a good sign?

If a person is willing to do a blood test for HIV is that a good sign?

HIV Honesty: It could be assumed good that a new special someone willing to do a blood test for HIV and (while they are at it) herpes i ; ii, but the results will only be known when the tests come back. You cannot tell if people have HIV or herpes by looking at them, as they might not even know themselves. With herpes, you can have only one breakout but are still infected (and can infect others) for life. ...Read more

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Is it true that the qualitative blood hCG test is as good as a urine test? It only tests positive with a 25mlu?

Is it true that the qualitative blood hCG test is as good as a urine test? It only tests positive with a 25mlu?

Probably close: The modern upt is very sensitive. 25mlu is very low, like just after implantation ( i'm not sure how long but just a couple of days. I recommend people skip the period before the upt, however. Otherwise you can be chasing it too hard causing extra stress. Pregnancy rates are about 10-20% per month; good luck with everything. ...Read more

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Is it advisable to have a meal before a blood test? My blood test result is bloated to 244 is that fatal?

Is it advisable to have a meal before a blood test? My blood test result is bloated to 244 is that fatal?

Diabetes: I assume you are talking about blood sugar levels and diabetes. You did not clarify this in your question. A non-fasting blood sugar level of 244 mg/dl is a sign that you have diabetes and need to change your diet, lose weight and/or be on medication to keep your blood sugar lower. While diabetes can shorten one's life span, having a non-fasting blood sugar level of 244 is not life threatening. ...Read more

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How does a doctor determine whether a patient has more than 20% myeloblasts: is it done by examining spinal fluid or can a blood test easily det

How does a doctor determine whether a patient has more than 20% myeloblasts: is it done by examining spinal fluid or can a blood test easily det

Where?: This is of course the leukemia / myelodysplasia workup. Most often the burning question is whether there's 20% or more in the marrow. If they're in the blood, we already know. Percentage in spinal fluid -- you need spinal fluid. I'm glad you're interested in your workup and I trust you'll have a productive discussion with your physician. Best wishes. ...Read more

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Is it true that a nst will only detect ischemia greater than 65 to 70 percent? If so isn't this a false sense of security when test is normal?

Is it true that a nst will only detect ischemia  greater than 65 to 70 percent?  If so isn't this a false sense of security when test is normal?

Ischemia: Blockages greater than about 70%, can impair the flow of blood and cause ischemia. If ischemia is detected on a stress test, it signifies significance of the blockage regardless of percentage. A negative stress test does not eliminate the possibility of ischemia completely, however has a very good negative predictive value especially if done with imaging. ...Read more

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Can doctor say that you have HIV from simple blood test at doc office?I heard that the white blood cell is reduced is it true?

HIV Testing: Yes. Of course. A simple blood test is how HIV infection is diagnosed. Hiv does not cause a change in the white blood cell count early on in infection. It may take years of infection to show this late stage symptom. ...Read more

Blood Smear (Definition)

A drop of blood is place on a microscope slide and smeared across the slide and reviewed under a microscope. Sometimes the slide will be stained to further reveal special features of ...Read more


Cbc (Definition)

CBC stands for complete blood count. This is a lab test that counts the different formed elements- red and white ...Read more