10 results
Urine Drug Screens - Common drugs that may cause false positive tests 

Amphetamines:
Bupropion, Labetalol, Methylphenidate, Phenylephrine,
Urine Drug Screens ... drugs that may cause ... false positive tests ... DrugScreens #UDS #Laboratory ... FalsePositive #Testing
Hyponatremia - Diagnostic Evaluation Algorithm

Step 1: Consider whether Posm may actually be normal or elevated
Step 2:
Algorithm Step ... Check Uosm and/or Urine ... Consider additional tests ... considered likely, the cause ... #Algorithm
Primary Adrenal Insufficiency:
 • ACTH stimulation test - Synthetic ACTH does not stimulate cortisol secretion because
ACTH stimulation test ... - Serum tests that ... Insufficiency #Evaluation ... #laboratory #diagnosis ... #testing #endocrinology
Adrenal Insufficiency Diagnosis Algorithm - Evaluation of HPA Axis Response to ACTH

Early am cortisol < 3
- Evaluation of ... unclear (often the case ... then go to stim testing ... Standard Stim test ... #Stimulation #Test
A lazy man's classification of hyponatremia
There are two possible approaches to the diagnosis of hyponatremia: .
A lazy man's classification ... essentially the same tests ... serum osmolality, urine ... cerebral salt wasting ... #Hyponatremia #Algorithm
Urine Microscopy - Urinary Sediment Examination Instructions
Preparation of the urine for microscopic examination:
 • Clean catch
Perform dipstick testing ... conical bottom test ... up by cells or casts ... and condenser focus ... protein matrix of casts
Algorithm regarding the diagnosis and treatment of Hereditary Hemochromatosis HH. 

Step 1: In the patient with
Algorithm regarding ... initial screening test ... normal, further evaluation ... elevated, HFE gene testing ... hemochromatosis #algorithm
Causes of Lactate Elevation, Lactic Acidosis - Differential Diagnosis

The most common causes of hyperlactatemia are usually:
excretion (e.g., urine ... / hypoxemia -> focus ... - assess other laboratory ... or diagnostic tests ... #typea #typeb #classification
Modified dengue severity classification, PAHO/WHO
Dengue without warning signs - DNWS:
 • Person who lives or has
dengue severity classification ... positive tourniquet test ... and no apparent focus ... bleeding: based on evaluation ... fever #severity #classification
A blood test and/or 24 hour urine collection for the breakdown product of adrenaline & noradrenaline
A blood test and ... /or 24 hour urine ... testing, imaging ... In certain cases ... Pheo #Diagnosis #Algorithm