Top
10
Doctor insights on: Tests For Dehydration

Share
Dr. Ashu Syal
655 doctors shared insights

Dehydration (Definition)

In physiology and medicine, dehydration (hypohydration) is the excessive loss of body water, with an accompanying ...Read more


2

2
Can harmful levels of dehydration occur without drop in BP or rise in resting pulse? What are the 4-5 best Blood-tests to confirm dehydration?

Can harmful levels of dehydration occur without drop in BP or rise in resting pulse?  What are the 4-5 best Blood-tests to confirm dehydration?

Whoa: Dehydration is diagnosed on physical exam. The high sodium, protein, and BUN may reflect, but the history and physical are still the basis of medicine. Anyone telling you otherwise is giving up a physician's most important task -- diagnosing disease by talking, listening, and touching -- and I say this as a pathologist who's devoted my life to labs. ...Read more

5

5
How do doctors test you for dehydration?

How do doctors test you for dehydration?

See below: Examination of vital signs like pulse which can be high, and low blood pressure, specially BP which falls when you make the patient stand are very good signs of dehydration. Dry mucus membranes and skin are not very specific. Lab tests like blood urea may be high. ...Read more

6

6
Would chronic dehydration -months show in labwork or would body adjust to make ratios normal and ur just left with hypovolemia, how test hypovolemia?

Would chronic dehydration -months show in labwork or would body adjust to make ratios normal and ur just left  with hypovolemia, how test hypovolemia?

Both could be true: Hypovolemia is more a clinical impression than a strict laboratory diagnosis. A test called a basic metabolic profile (bmp) can assess for true dehydration as a result of acute or chronic hypovolemia. Hypovolemia can be present without laboratory signs of true dehydration. Younger people are, as a rule, better able to compensate for certain deficiencies (in this case water) than older people. ...Read more

See 2 more doctor answers
7

7
Is there a way of testing someones dehydration level using their siliva? If not through siliva what are the best ways to test level of dehydration (taking vitals, etc.)

Body weight: As long as you have a reference weight, body weight is the primary feature that allows calculation of the degree of dehydration. If a 20 lb kid comes into the office 2 days after a well check having had vomiting for a day, he is not dehydrated if he weighs 20 lb but is if he weighs 19. A 5% weight loss in a short time frame is water loss. ...Read more

See 1 more doctor answer
8

8
Can just a one-off blood test show dehydration?

Can just a one-off blood test show dehydration?

More data: Blood and urine testing can help confirm a diagnosis of dehydration, but it is also dependent on the physical exam and history of the patient. Using just the lab result alone, it would be difficult to confidently say that a patient was dehydrated. ...Read more

10

10
Does dehydration give wrong a laboratory test of blood chemistry?

Does dehydration give wrong a laboratory test of blood chemistry?

No: Dehydration will lead to a change in laboratory values on blood tests but they are still accurate. Once the dehydration is treated, the other values will change accordingly. ...Read more