Use to detect hemosiderinuria secondary to excess hemolysis.
First-morning collection is preferred
Screw cap plastic container (non sterile)
Screw-cap polypropylene frozen transport vial/tube - 4mL (LabCorp)
Frozen (preferred) - 1 week
Refrigerated - 1 week
Ambient - 1 hours
Specimens in preservatives
Semi-Quantitative Microscopy
Negative