The following enzyme is deficient in alkaptonuria:

Contrast dye media used in renographic procedures may: (1) precipitate into hexagonal plate crystals; (2) extremely increase the specific gravity; (3) precipitate into rectangular crystals with notched corners; (4) interfere with reagent strip reactions.

How many fecal WBC are in the image below? 

The difference between fetal hemoglobin (HbF) and maternal hemoglobin (HbA) is:

You are reviewing a pleural fluid and view the cells shown below.  Which of the following correctly identifies your next action?

The abnormal metabolite that is present in the urine in alkaptonuria is:

A red, cloudy synovial fluid containing 210,000 RBCs/cmm and 15,000 WBCs/cmm with 45% neutrophils is consistent with:

Tamm-Horsfall protein is:

An inborn error of metabolism which presents in childhood, often presents fatally during an illness with vomiting, and which is best treated with carnitine and avoidance of fasting states is:  

Normal Ropes test clot formation in synovial fluid is dependent upon: