RBC Morphology Evaluation in Urine

Abbrev Code:RBCMPH   
Order Code:LAB7093Order Name:RBC Morph, Urine
Synonyms:Red Blood Cell Morphology, Urine; Dysmorphic RBC, Urine; Dysmorphic Erythrocytes, Urine; Evaluation of RBC Morphology for Dysmorphic RBCs and Acanthocytes; Erythrocyte Morphology Evaluation in Urine
Methodology:Phase Contrast Microscopy
Test Includes:Percentage dysmorphic RBCs, percentage acanthocytes, number of RBC (erythrocyte) casts per 50 low power fields.
Turnaround Time:Performed Mon, Wed and Fri, 7-3:30 pm

Collection Instructions

Specimen:Urine, random collection
Optimal Volume:Submit entire collection; analysis requires 3 mL.
Minimum\Peds Volume:1 mL; collection volumes of 1-3 mL will be analyzed, but may not be concentrated before examination of this sediment.
Container:Urine culture tubes
Alternate Containers: Plastic leakproof container, sterile
Collection Instructions:Contact the lab before sending at 612-273-6135 and ask for charge staff. Specimen of choice is a first morning, mid-stream, clean catch urine. Refrigerate the urine if it cannot be delivered immediately.
Causes for Rejection:Specimen stored at room temperature >2 hours; stored at refrigerated temperature >24 hours; fecal contamination.

Processing and Shipping

Specimen Processing:Store in refrigerator.
Shipping Instructions:Ship at refrigerated temperature.
Test Performed at or Referral Lab Urinalysis  (UMMC West Bank)


Reference Range:Glomerular hematuria suspected when:
Percentage dysmorphic RBCs  > 40% and/or
Percentage acanthocytes  > 5% and/or
RBC casts  > 1 per 50 LPFs
Note: Sensiticity is enhanced if three urine specimens are examined within a 2-4 week period.

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