Question 1

can a blood test detect blood clots in legs?

Accepted Answer

More useful to : Exclude clots. A blood test may be done as a screening test to check for clots, not specifically in the legs. These tests, if negative are useful in excluding blood clots, but positive results have many false positives.

Question 2

lower left leg&foot pain w/ swelling for the past month. have had xrays & a blood test for blood clot which neither showed anything. good circulation.

Accepted Answer

A test for a blood: Clot would be a venous duplex or ultrasound not a blood test.

Question 3

i have had a blood clot in my leg. can i still have blood test to screen for genetic family clotting tendencies?

Accepted Answer

Clot: yes if you are young with no medical problems , esp if there is no obvious reason for the clot

Question 4

why do my legs feel weaker than my arm? will a d dimer blood test show a pulmonary embolism or blood clot?

Accepted Answer

D-dimer: A d-dimer test is helpful with regards to diagnosing a pulmonary embolism (pe)or deep vein thrombosis (the pe being caused by a deep vein thrombosis or clot ).   The gold standard is still (for a clot) is a venous doppler study and for a pe - either a ventilation perfusion scan (vq scan) or a spiral ct of the lungs.  All of these tests require scheduling and may /may not be available in your area.

Question 5

for about 3 weeks, my left calf has been swollen and hard. not painful but tingling with activity. no injury + blood test suggests not a blood clot?

Accepted Answer

Worrisome: Your history is indeed worrisome for a blood clot.  I think an ultrasound of your lower leg is need to rule out a clot.  I don't see how a blood test could rule out the presence of a clot.  If anyone knows I would like to hear an explanation.  Please seek medical help.

Question 6

does a normal ptt blood test mean low risk for developing blood clots?

Accepted Answer

No: You should draw no conclusions about tendency to develop clots from ANY of the ordinary hematologic parameters.

Question 7

what blood test would a doctor order to c if a person has blood clots or c if there is something going wrong like this?

Accepted Answer

D-dimer: A blood test for D-dimer is a good screening test. A negative result is more useful in excluding blood clots than a positive one of concluding the presence of a clot. It also depends on the physical location of the suspected clot and imaging studies may be relevant.

Question 8

i saw blood clots when taking injection in my left arm for blood test .is there any serious problems?

Accepted Answer

Blood clot: It could be normal slight blood clot at the site of injection.  Let's wait for blood test results.

Question 9

will a cbc blood test show internal bleeding or blood clots?

Accepted Answer

No: a low hematocrit or hemoglobin on a cbc requires investigation, which can include internal bleeding as a cause.
Multiple other causes as well: cancer, congenital, poor marrow etc.

Other tests can discern clotting disorders

Question 10

had a blood test and could have blood clots. had injections and to thin blood. brown substance is now  coming out as if i have had a period. normal?

Accepted Answer

Probably: Obviously the blood thinners could change the characteristics of your menses.

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Doctor answers about:

Blood test for blood clots in leg

A member asked:

Can a blood test detect blood clots in legs?

A member asked:

Lower left leg&foot pain w/ swelling for the past month. have had xrays & a blood test for blood clot which neither showed anything. good circulation.

A member asked:

I have had a blood clot in my leg. can i still have blood test to screen for genetic family clotting tendencies?

A member asked:

Why do my legs feel weaker than my arm? will a d dimer blood test show a pulmonary embolism or blood clot?

A member asked:

For about 3 weeks, my left calf has been swollen and hard. not painful but tingling with activity. no injury + blood test suggests not a blood clot?

A member asked:

Does a normal ptt blood test mean low risk for developing blood clots?

A member asked:

What blood test would a doctor order to c if a person has blood clots or c if there is something going wrong like this?

A member asked:

I saw blood clots when taking injection in my left arm for blood test .is there any serious problems?

A member asked:

Will a cbc blood test show internal bleeding or blood clots?

A member asked:

Had a blood test and could have blood clots. had injections and to thin blood. brown substance is now coming out as if i have had a period. normal?

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