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Why Would A Doctor Order A 24 Hour Urine For Catecholamines Test
Urine is the product of the kidneys, which is produced to eliminate the waste products of metabolism, manage body fluid balance, &maintain acid-base balance. The blood is first filtered by the kidneys, and the composition of the resulting fluid is then altered depending on the body's needs. It is composed of mostly water, and breakdown products from blood cells impart ...Read more
Should i redo 24 hrs urine test for catecholamines metanephrine if i had a cigarette or just give it to lab?
Why would my doctor send me for a chest X-ray after getting an abnormal flow from a spyrometry test wouldn't a c t scan be more appropriate?
Depends on finding: Chest xray involves less irradiation. An obvious abnormality such as large area of atelectasis or large area of airtrapping might show up without the need for CT. If chest xray is normal or equivocal physician might order CT if underlying cause related to diseases not entirely recognizable on ordinary chest radiograph. Subtle air trapping and minor atelectasis could be recognized ...Read moreSee 1 more doctor answer
Method selection: The method chosen (breath, blood, urine, etc.) depends on the substance being measured, how it reacts with the body (metabolites, etc.) the performance and availability of the test. Some substances are more easily detected by breath tests (e.g. alcohol, ammonia) while others may be concentrated in urine (most drugs of abuse.) ...Read more
What instructions wud a doctor give to a patient before taking a 24 hour urine cortisol test?What wud the patient have to take care of for the test?
Does your fasting blood glucose have to be in a specific range for a doctor to order a gtt ?When will a doctor order one?
Various doctors: Order gtt's for various indications. Check w/your doctor about their views and intentions. One indication that should never be used for a GTT is a concern about "reactive hypoglycemia". The GTT is not and never will be a valid test for hypoglycemia, in fact reactive hypoglycemia doesn't exist in the absence of cancer, severe liver or kidney disease, prior GI surgery, someone receiving diabetes med. ...Read more
Can a doctor see you are pregnant thru a pelvic exam before a blood test or a urine test can come back positive?
No: This would require powers beyond the skills of even the best examiners. ...Read more
Should i contact a different doctor for adrenal mass went to a urologist after a CT scan for kidney stones showed an adrenal mass. Urologist sent me for a MRI and had me do a 24 hour urine test to see why i had kidney stones. I am more worried about the
The most common: Adrenal mass seen in about 15% of patients is an adrenal adenoma which is a benign tumor. It is easy to characterize on MRI because we can show there is fat in the tumor. This usually (94% accurate) means that the adrenal tumor is benign. But we make sure by following the tumor with additional MRI studies, which do not use harmful radiation. Ultrasound is not as accurate for followup. ...Read moreSee 2 more doctor answers
IF i took a half a 7.5 hydrocodone 6 hrs before a urine test being sent to a lab will it test positive?
For what reasons might a doctor call someone back in after a routine annual blood, urine, and ECG test?
Doctor call back: It appears that some of the findings were not routine, or were not as expected and the doctor may want to discuss them with you. ...Read more
Depends: For most tests if the specimen reaches the lab within four hours of collection, it would be okay. Some organisms may last longer. Sputum could be preserved for examination of cells including tumor cells, at the time of collection and then time would not matter. In rare cases of looking for a live parasite, the sputum should preferable be collected in the lab. ...Read moreSee 1 more doctor answer
NCAH: In females with hirsutism, irregular periods, recalcitrant acne, for example, this test will screen for the most common form of (non-classical) congenital adrenal hyperplasia. If significantly elevated, the hormonal source of the problem is more than likely the adrenal gland. An endocrinology referral would be the next step. ...Read moreSee 1 more doctor answer
Of course: But you need to know which hormones to check and why? ...Read more
Can i get an STD test while on my period? Is it normal for a doctor to refuse blood and urine testing to a patient, and only recommend a physical exam
Yes: Testing for STDs can be done while on your period. Some are done on blood drawn from your arm and others on urine or cervical swabs but bleeding does not prevent any of the testing.The only way to know why a physician would want to just do an exam and no blood or urine tests would be to ask that physician. Sorry I can't tell u what the other doctor was thinking. It may have been done to save money ...Read more
More accurate: Both tests search for HCG or human chorionic gonadotropin, the hormone produced by the fetus. A blood pregnancy test will tell you the exact level of the hormone and can be detected at much lower levels, therefore giving an earlier result. A urine pregnancy test is only positive or negative the quantity of HCG in the blood pregnancy test can also help determine how far along the fetus is. ...Read more
24 hour urine catecholamine for a pheo- if a person does not have an episode during the 24 hours would it still show elevated levels. If so how?
Usually, yes: A pheo usually secretes catecholamines continuously, so it is not usually necessary to time the collection. These catecholamines yield a lot of breakdown products (eg. metanephrines). However, in some circumstances, if there is a very high suspicion for pheo and the initial tests are negative, and the attacks are sporadic, a urine collection timed with the episode is reasonable. ...Read more
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