Questions tagged [blood-tests]

Questions about tests of the blood that help to estimate the component(s) in it.

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2
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1answer
130 views

Is the T-spot blood test sensitive enough to determine difference between exposure to the tuberculosis and tuberculosis vaccination?

I wonder whether the T-spot blood test is sensitive enough to determine difference between exposure to the tuberculosis and tuberculosis vaccination.
2
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1answer
43 views

Can the foods you have been eating be detected through blood tests?

I know that things like sodium, cholesterol, and sugar levels can be found in blood (at least I think so.) But what about things like fruits and veggies? Can that be detected through bloodwork? Or ...
2
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2answers
262 views

How fast can serum calcium, magnesium and potassium levels change?

Can serum electrolytes (such as Ca Mg or K) within NORMAL limits rise or drop substantially within 12-24 hours? Enough to go outside of normal range, even to the point of being symptomatic?
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0answers
24 views

Is it considered eosinophilia if the total eosinophil count is normal but the eosinophil percentage is high?

If the total eosinophil count is normal but the eosinophil percentage is high, is it considered eosinophilia, or is it merely grounds for a rerun of the test? In a paper by Kovalski and Weller (2016), ...
2
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0answers
32 views

Will there be any error in the result if the sample taken for COVID-19 RT PCR test is kept for days before performing the test?

What would be the impact of keeping the sample (nose swab) for 5 days before performing RT-PCR on it? If no, then is there a particular way of storing the sample. Is there any standard set by the ...
2
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0answers
23 views

DIY hypernatrimia test

Is there a reliable, accessible blood test kit that can be administered at home to monitor hypernatrimia ? I understand that because sodium does not produce colored compounds, serum sodium cannot be ...
2
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0answers
41 views

Is low immature reticulocyte fraction after an acute hemolytic crisis normal?

All following data are theoretical and not real: A patient had a hemolytic crisis without anemia proven by elevated reticulocytes, elevated unconjugated bilirubin and normal hemoglobin and erythrocyte ...
2
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0answers
19 views

Why are there different blood sugar measurements?

I've been reading about health and wondering why blood sugar measurements are different. Why do these different sites use different measurements and give different numbers? Examples: Less than 100 ...
2
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0answers
384 views

Difference between mmol/l and mg/dl for blood glucose measurement

I'm in the process of preparing a short lecture on hypoglycemia. In the process, I discovered that blood glucose levels can be expressed in the measurement of millimoles per liter or milligrams per ...
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0answers
48 views

What metric is used to measure estrogen levels?

I have had a blood test recently and over the phone I was told by a doctorthat my oestrogen level is high. I'm a man and was told my level is "190, but the average is 150". 190 what? I forgot to ask ...
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0answers
64 views

Hormone Definitions and Measurements [closed]

How are human hormones defined in the body and how are they measured? I understand that blood tests can be used to measure the amount of a hormone in the body, but how do we know which hormone ...
2
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0answers
43 views

How accurate are blood count tests?

I just started to read about blood count, I am wondering how accuratelly can be determimed the number of red blood cells in case of Rouleaux formation or agglutination of red cells?
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0answers
5k views

What does the stability of blood test means for patient who have few pains in different parts of the body

What does the stability of a CBC (and all related tests) means for a patient who is not suffering anything besides few ache here or there like in stomach or the back? More generalized, if a blood ...
2
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0answers
23 views

What are basic checks to be done yearly [closed]

I am a reasonably healthy 47 yo male. Not hypochondriac. I am wondering which basic medical tests should be performed, and in which cycle. I am thinking about tests per se (blood, urine,...), ...
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0answers
149 views

Can superficial injury and exercise elevate AST and LDH levels?

Reading the information available here and here, it's stated that both exercise and other injuries can cause elevated results on a couple of indicators commonly used to measure liver function. ...
2
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0answers
898 views

EverlyWell - legit?

EverlyWell is a lab testing startup. I'm looking at their food sensitivity test, didn't find a whole lot of independent info online (other than blogger reviews that were paid by the company). Is it ...
2
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0answers
11 views

Why cold on the back hurts more than cold in the front?

I'd rather have appended this to the health group, but I guess the biology se was better for this. The question is, why is it that the cold, on the back, hurts, whereas the cold on the front, arms, ...
2
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0answers
51 views

What would the blood work look like for someone on a very high protein diet? [closed]

What will blood test results look like for someone on a very high protein diet consuming 1-2g of protein per pound of bodyweight? Is it healthy to maintain such a diet?
1
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1answer
92 views

Pre diabetic after fasting blood work?

So I have been feeling very lethargic the past year and went in to get some blood work. I fasted for 12 hours prior to test, with the exception of mint that I had that morning hour before test that ...
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1answer
247 views

Baby vs. Butterfly Needle

How do they differ? They're mentioned here. I prefer a smaller needle to lessen pain for blood tests.
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2answers
172 views

Blood Test Panel for weight loss in females

Is there a well regarded medical/academic type of blood panel test or list of items to get tested for, when unable to loose weight, despite proper diet and exercise efforts? For example, this comes ...
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1answer
4k views

Which lab value skeleton diagrams are used to display results for CBC, Chemistry, coagulation panel, etc?

Which lab value skeleton diagrams are used for discrete, cbc/cbcdiff, chem, and coag results?
1
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1answer
71 views

Which blood test results would most indicate further testing for cancer?

As a member of the healthcare community, I've long been taught (as we have all) that test results are only valid in the context of symptoms and at the discretion of a healthcare professional. That ...
1
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1answer
31k views

Myelocytes present in CBC

0.1 X10E3/uL Myelocytes It says the normal range is 0. Is there something wrong with having that many myelocytes?
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1answer
27 views

Is There Any Point In Getting Lab Tests Done If I Can't Find a Primary Care Physician?

I've been seeing a therapist for depression and I've been requested to get a physical done so I can have my vitamin D, testosterone levels and thyroid checked. Unfortunately I live in a rural area ...
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1answer
43 views

What are the factors that make veins easy for a blood test one day, and difficult the next?

I take blood tests quite frequently, and most the time the technicians (Phlebotomists) spend a lot of time searching both my arms for a good vein. I pump my fists, and they smack my arms (and of ...
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1answer
29 views

Online doctor consultation? [closed]

I'm interested in paying a doctor to chat with me online to help explain my blood test results. Does such a thing exist? And do you know of any affordable good options?
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1answer
76 views

Checking nutrition balance

I've just started to explore nutrition. I assume that: a1) A human body needs some minerals and vitamins, which can be delivered either in food or as supplements a2) There's recommended daily ...
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1answer
91 views

Difficulty extracting blood

A little while ago, I had my blood drawn for lab work. They were only filling a small vial with it, but even so the nurse had a hard time getting enough blood to flow into the vial. What could cause ...
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1answer
80 views

The state of glucose in the blood

I have a simple question regarding glucose and the blood, for which I have not been able to find a satisfactory answer through some independent research through Google. How is the glucose in the blood ...
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1answer
38 views

If an HIV test was done using a chemiluminescent microparticle immunoassay (CMIA), does it mean it screens for HIV 2 and/or is a 4th generation test?

If an HIV test was done using a chemiluminescent microparticle immunoassay (CMIA): does it mean that it screened for HIV 2 and/or is a 4th generation test? On http://www.uphs.upenn.edu/bugdrug/...
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1answer
79 views

What software are there to use on laptop for blood analysis and diagnosis?

I wanted to know if there are any softwares that by installing on a notebook can allow me to do initial diagnosis of a patient at ordinary locations. Does anybody know what softwares are there or ...
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1answer
73 views

The sugar/glucose is one point too high

I am 60 and I got my first blood test in a few years. The glucose is 101. the range is 65-100. My doctor wrote this: The sugar/glucose is one point too high. You should try to eat fewer carbs (...
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1answer
59 views

Possible reason/s for increases in neutrophil, platelet, and WBC levels at the same time?

I took a routine blood test today, and my results came back with three abnormal results that the laboratory flagged. My WBC, platelet count, and neutrophil levels were all elevated: WBC: 11.8 ...
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1answer
75 views

Tetanus antibodies

I received a tetanus vaccination less than 10 years ago when I was in the military. I recently started donating plasma and donation center gave me another tetanus shot to boost the tetanus antibodies ...
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1answer
584 views

Explanation of normal CRP during neutrophilia?

Let us assume we have a patient with this history and let us try to explain his/her normal CRP values on the end of this post given the fact of commorbid high fever and neutrophilia. The questions to ...
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1answer
565 views

Are all types of HIV detected in routine blood tests?

There are two main types of HIV: HIV-1 and HIV-2. The more common type HIV-1 has several groups and subtypes [1]. Do all of these show up on routine HIV blood tests?
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0answers
13 views

Can the HS-Omega-3 Index be calculated from EPA and DHA?

I want to test my levels of Omega 3s, and I'm curious if it makes sense to test both the HS-Omega-3 Index and the EPA (Eicosapentaenoic Acid) & DHA (Docosahexaenoic Acid), or just the latter? ...
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0answers
23 views

Timeframe of MMA / HCY response to Vitamin B12 supplementation

What is the timeframe one can reasonably expect for elevated serum Methylmalonic Acid and Homocysteine levels to be normalized by supplementation (e.g. 250 μg daily cyanocobalamin), assuming ...
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0answers
12 views

Why is there a difference between venous bicarbonate and bicarbonate in ABG?

Lets say a serum blood test shows bicarbonate of 20mmol/l but an ABG of 15mmol/l, both tests taken 3 minutes apart in a person with acute metabolic acidosis with compensation. Can anyone explain why ...
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0answers
37 views

Can certain medications cause false positives for COVID-19?

I was told by some colleagues at work that certain medications if they were taken by a person can cause antibody COVID-19 tests to test positive, is it possible ? If so how is that possible ?
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0answers
38 views

High lyphocytes count in blood test

What is the lymphocytes counts limit which discriminates a recent infection from a CLL (Chronical Leukaemia Lymphocytosis)?
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0answers
32 views

Is there any data about the significance of a blood serotonine level test and links to depression or other psychiatric diseases, or simply mood?

What does low or high blood serotonine levels tell us. Is there any data on the link between certain conditions and serum serotonine concentration?
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0answers
41 views

Is undermethylation considered a legitimate diagnosis?

Apparently undermethylation can be diagnosed using blood work. I googled it a bit, and what I saw seemed to suggest that it isn't widely accepted in the medical community. I'm wondering how ...
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0answers
10 views

Opposite Venous Blood pH Readings In Groups Of Patients?

Assume Group A and B are 2,000 people each. If one doctor found that, say, sodium bicarbonate alkalized all venous blood of patients in Group A, but another doctor found that sodium bicarbonate ...
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0answers
16 views

Covariance matrix for Complete blood count

What is known about a (multivariate) statistical distribution of complete blood count? Especially about the covariance or correlation matrix (in a healthy population).
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0answers
31 views

Plasma concentrations Of Beta-Carotene and Retinol

I'm doing an analysis, and retinol and beta carotene are involved. I need to know : 1) Normal levels of dietary beta carotene and Retinol consumed (mcg per day); 2) Normal levels of plasma retinol ...
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0answers
58 views

Clarification with a prescription for blood tests

I have a pro long condition of hair loss. I consulted a dermatologist and he gave me list of blood tests which I should do before the next consultation. I have difficulty in reading one of the items ...
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0answers
124 views

Is there a synergistic effect between phosphate and testosterone in respect to Physiology?

For example: A patient's blood analysis results come through, and it states that the patient has high testosterone and high phosphate levels. What are the likely causes of this, assuming/...
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0answers
20 views

What are the differential diagnoses of increased ferritin?

What are the possible causes of increased ferritin in a 69 year old man who is otherwise normal and who is not anemic?