Fractionated excretion of sodium-236

Test info

  
Fractionated excretion of sodium
  
236
  
LAB236
  
NAX
  
FENA

Specimen

  
Urine, random and Lithium heparin (Li hep) plasma
  

 Urine:

Screw cap plastic container (non sterile)  

                                  

 

Lithium heparin plasma:

Lt green plasma separator (PST)

 

 

  
Urine - 10 mL
Lithium heparin plasma - 1.0 mL
  
  • Collect blood sample within 2 hours of urine collection
  • Immediatley following blood collection, mix the sample thoroughly by gentle inverting 8 - 10 times, to prevent clotting
  

Urine:

Transfer sample to a Urine aliquot transport vial/tube - 10mL (AHL)

Lt green plasma separator (PST):

Spin within two (2) hours of sample collection

  

Urine:

 Urine aliquot transport vial/tube - 10mL (AHL) 

                                                                                              

 

Plasma:

Lt green Plasma separator (PST) 

                                                       

 

  
Urine, random and Serum
  

Serum:

Gold serum separator (SST) tube 

              

  

Serum:

Immediately following collection, thoroughly mix sample by gently inverting 5 times

  

Gold serum separator (SST) tube:

  1. Allow sample to clot for a minimum of 30 minutes
  2. Spin within two (2) hours of sample collection
  

Gold serum separator (SST) tube 

  

Refrigerated (preferred) - 7 days

Ambient - 7 days

  
  • Improper labels (unlabeled or mislabeled)
  • Hemolysis (some procedures)
  • Improper anticoagulant or ratio
  • Delay in transport
  • Improper storage temperature affecting results
  • Inappropriate timing of collection
  • Improper container
  • Leaking container resulting in compromised specimen
  • Quantity not sufficient (QNS)

Performance

  
AHL - Chemistry: C
  
Daily
  
1 day
  

Ion Selective Electrode (ISE)

Clinical and Interpretive info

  

See report

Billing

  
84300
84295
82570
82565

Tracking

  
05/21/2004
  
08/28/2018
  
01/09/2024