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30090:RENAL FUNCTION PANEL
Methodology:Potentiometry / Colorimetry / Enzymatic Rate
Edit Date:6/11/2010
Components:Albumin / BUN / Calcium / Chloride / CO2 Content / Creatinine / Glucose / Phosphorus / Potassium Sodium
Performed:Daily
Released:Same day as tested
CPT Code:80069
Specimen Collection Details
Collection:One 7.5 mL serum separator tube (SST). Also acceptable: One 4 mL green top tube or one 4.5 mL light green plasma separator tube (PST). If a fasting glucose is needed, patient should be fasting 8-12 hours. A non-fasting specimen is acceptable. Do not draw from a limb receiving an intravenous infusion. Patient should avoid exercising forearm before collection, which may cause an elevation in potassium level.
Handling:Allow to clot, centrifuge SST or PST within 2 hours of collection and transport in original tube. If a non-gel barrier tube is used, centrifuge within 1 hour and separate into a plastic vial for transport. Refrigerate.
Stability:6 days refrigerated.
Standard Volume:2 mL serum or plasma.
Minimum Volume:1 mL serum or plasma.
Transport:Refrigerated.
Rejection Criteria:Gross hemolysis; specimen left in contact with cells for more than 3 hours; tubes other than those specified.