35 results
Laboratory Testing in Hemolytic Anemia

Intravascular vs Extravascular Hemolysis
Reticulocytes
Unconjugated bilirubin
LDH
Peripheral smear
Haptoglobin
Urine hemosiderin
Urine hemoglobin
Carboxyhemoglobin

#Hemolytic #Anemia #Laboratory #Testing #workup
Laboratory Testing ... Haptoglobin Urine ... hemosiderin Urine ... #Testing #workup ... #diagnosis #hematology
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
Causes of Thrombocytopenia and Platelet Disorders - Differential Diagnosis and Workup
History:
 - Prior platelet count, family
smear, HIV/HCV testing ... K), H. pylori test ... thyroid function test ... or if a primary hematologic ... #Workup #hematology
Rheumatology Workup - Laboratories Studies in Rheumatic Diseases

• Septic arthritis - Gram stain and culture of
Rheumatology Workup ... more time for the laboratory ... • Serum and urine ... Rheumatoid #Arthritis #laboratory ... #Rheumatology
Causes of Secondary Hypertension - Differential Diagnosis and Screening Testing
Common causes: 
 • Renal parenchymal disease
and Screening Testing ... Renal ultrasound, Tests ... sodium loading test ... (with 24-h urine ... saline infusion test
Commonly Observed Laboratory Findings in Hepatic / Liver Failure
 - Elevated conjugated and unconjugated bilirubin -
Commonly Observed Laboratory ... BUN - Decreased urine ... LiverFailure #Hepatic #Hepatology ... #Laboratory #Diagnosis ... #Testing
Urinalysis & Urine Sodium 
Theophilus Protospatharius, a seventh-century physician who wrote the first manuscript focused exclusively
Urinis", determined heating ... Clarity Dipstick test ... specific gravity test ... • Urinary casts ... #UNa #casts #glucosuria
Acute Mesenteric Ischemia - Performance of 
Laboratory Tests (Sensitivity, Specificity) 
- WBC, Lactate, D-dimer, Urine I-FABP

#Mesenteric
Performance of Laboratory ... Tests (Sensitivity ... Lactate, D-dimer, Urine ... Ischemia #AMI #Testing ... #Diagnosis #Laboratory
Summary of Agents Potentially Contributing to False Positives on Urine Drug Screens (UDS)
Marijuana Metabolites
 • dronabinol,
False Positives on Urine ... naproxen and modern tests ... FalsePositives #Urine ... DrugScreening #UDS #Testing ... #Laboratory #diagnosis
Primary Adrenal Insufficiency:
 • ACTH stimulation test - Synthetic ACTH does not stimulate cortisol secretion because
ACTH stimulation test ... aldosterone - Low in cases ... - Serum tests that ... Insufficiency #Evaluation #laboratory ... #diagnosis #testing