Minimum Sample Volumes Needed by Chemistry Laboratory

TEST PEDIATRIC HCT <40%* TUBE TYPE**
Alanine Aminotransferase (ALT) 1 tube 1 tube PST
Ammonia 1 tube 1 tube 2 ml Lavender top
1/2 full & ON ICE
Amylase 1 tube 1 tube PST
Angiotensin-1 Converting Enzyme (ANCE) 1 tube 1 tube PST
Bilirubin Direct (BILD) and/or Total (BILT) 1 tube 1 tube PST
C-Peptide 3 tubes 3 tubes Red
Calcium 1 tube 1 tube PST
Carbamazepine 1 tube 1 tube PST
Creatine Kinase (CK) 1 tube 1 tube PST
Creatine Kinase (CK) MB Isoenzyme 2 tubes 2 tubes PST
C-Reactive Protein (CRP) 1 tube 1 tube PST
Digoxin 1 tube 1 tube PST
Ferritin 3 tubes 3 tubes PST
Folate 3 tubes 3 tubes Red
Free Thyroxine (FT4) 2 tubes 2 tubes PST
Gentamicin 1 tube 1 tube PST
Glucose 1 tube 1 tube PST
Gamma Glutamy Transpeptidase (GGT) 1 tube 1 tube PST
Hemoglobin A1C 1 tube    Lav
Inorganic Phosphorus 1 tube 1 tube PST
Insulin 3 tubes 3 tubes Red
Iron 2 tubes 2 tubes PST
Lactate 1 tube 1 tube PNH
Lidocaine 1 tube 1 tube PST
Lipase (LPSE) 1 tube 1 tube PST
Magnesium 1 tube 1 tube PST
Osmolality 2 tubes 2 tubes PST
Procainamide 1 tube 1 tube PST
Phenobarbital 1 tube 1 tube PST
Phenytoin 1 tube 1 tube PST
Primidone and Metabolite 1 tube 1 tube PST
Procainamide 1 tube 1 tube PST
Protein Electrophoresis (SPE) 1 tube 1 tube Red
Theophylline 1 tube 1 tube PST
Tobramycin 1 tube 1 tube PST
Triglycerides 1 tube 1 tube PST
TSH 2 tubes 2 tubes PST
Valproic Acid 1 tube 1 tube PST
Vancomycin 1 tube 1 tube PST
Vitamin B12 3 tubes 3 tubes PST

* Low birth weight infants with Hematocrit less than 40%

** Tube Types (preferred tube type listed first)

PST - light green top lithium heparin with gel separator, fill with 0.6 ml whole blood

Red - red top with gel separator, fill with 0.6 ml whole blood

Lav - lavender top, fill with 0.8 ml whole blood

PNH - green top sodium heparin, no gel or syringe