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A newborn excreted stool containing blood. An APT test was performed. A pink color remained after the addition of NaOH. The source of blood was:

Three tubes of CSF labeled 1, 2, and 3 that are received in the laboratory for testing should be delivered as follows:

Cystine crystals may be visually confused with uric acid rosette forms.  Which solubility test will help to distinguish these two crystals?

Tamm-Horsfall protein is:

The term given to a macrophage containing a neutrophil, shown here ,is:

Identify the cell type shown in proliferation here in a CSF sample: 

A risk factor for pyelonephritis includes:

How many fecal WBC are in the image below? 

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

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