2,3-Dinor-11Beta-Prostaglandin F2 Alpha, Urine

Message
TO BE SENT TO MAYO/ COLLECT M-W ONLY
 

Test Code
23BPG

CPT Codes
84150

Preferred Specimen
Preferred: 24-hour urine collection

Collection Instructions:
1. Collect urine for 24 hours.
2. Refrigerate specimen during collection, and send specimen refrigerated.




Patient Preparation
Patients taking aspirin or nonsteroidal anti-inflammatory drugs (NSAIDs) may have decreased concentrations of prostaglandin F2 alpha. If possible, discontinue for 2 weeks or 72 hours, respectively, prior to collecting a specimen.

Minimum Volume
Specimen Volume: 4 mL

Other Acceptable Specimens
RANDOM URINE

Specimen Stability
Refrigerated (preferred) 14 days
Frozen 30 days
Ambient 8 hours


Clinical Significance
2,3-Dinor-11beta-prostaglandin F2 alpha is the most abundant metabolic product of prostaglandins released by activated mast cells. Systemic mastocytosis (SM) is a disease in which clonally derived mast cells accumulate in peripheral tissues. Degranulation of these mast cells releases large amounts of histamines, prostaglandins, leukotrienes, and tryptase.
 
The World Health Organization diagnostic criteria for SM require the presence of elevated mast cell counts on a bone marrow biopsy and 1 of the following minor criteria: abnormal mast cell morphology, KIT Asp816Val mutation, CD25-positive mast cells, or serum tryptase greater than 20 ng/mL. Alternatively, SM diagnosis can be made with the presence of 3 minor criteria in the absence of abnormal bone marrow studies.
 
Measurement of mast cell mediators in blood or urine is less invasive and is advised for the initial evaluation of suspected cases. Elevated levels of serum tryptase, urinary N-methylhistamine (NMH), 2,3-dinor-11beta-prostaglandin F2 alpha (2,3 BPG), or leukotriene E4 (LTE4) are consistent with the diagnosis of systemic mast cell disease.
 

Performing Laboratory
Mayo Clinic
200 First St. SW
Rochester, MN 55905
Phone: 507-284-2511



The CPT Codes provided in this document are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.