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Update: National Shortage of Sodium Citrate (“Blue Top”) Blood Collection Tubes

September 1, 2021

There continues to be a global shortage of sodium citrate (“blue top”) blood collection tubes used for coagulation testing as a result of unprecedented demand, in part due to COVID-19 surges, vaccine and treatment development. This was anticipated to last through August 2021, but now, due to continued unprecedented demands, there is no end date in sight. Please take this into consideration when ordering coagulation testing (i.e. Protime, aPTT, Fibrinogen, D-dimer, Lupus Screens, Factor Assays, Mixing Studies, von Willebrand testing, etc.). Continue Reading


Test Change Summary – September

Troponin T, Blood Level [LAB139] has been replaced with High Sensitivity Troponin T [LAB1230561]

Cardiolipin IgM Ab [LAB3651] and Cardiolipin IgG Ab [LAB3652] have been discontinued. Please order Cardiolipin IgM and IgG Abs [LAB3653]

Drug of Abuse, Pain Clinic, Urine [LAB3382] has been discontinued and replace with Urine Drug Screen with Confirmation (32 Targets) [LAB1230497] or Urine Drug Screen with Confirmation (23 Targets) [LAB1230496]

Blood Drug Screen Comprehensive PC (Pain Clinic) [LAB3574] and Urine Drug Screen Comprehensive PC (Pain Clinic) [LAB3575] have been discontinued and replaced with Drug Analysis Comprehensive, Blood [LAB349] and Drug Analysis Comprehensive, Urine [LAB500]

Kidney Stone Analysis [LAB564] has been updated and has a new order code [LAB1230545]. Note this is a send out to Mayo Clinic Laboratories.

Zinc, Red Blood Cell [LAB1230059] is no longer available and does not have a replacement test.

RA Screen [LAB3324] performed at Spectrum Health Big Rapids Laboratory has been discontinued. The Rheumatoid Factor, Quantitative [LAB206] performed at Spectrum Health Regional Laboratory will be utilized moving forward.

Questions may be directed to Laboratory Services using the “Contact Us” link above.