Printable Test Catalog - OU Medicine

[VITA] Vitamin A Level
SPECIMEN REQUIRED: Refrigerated serum (protect from light)
TUBE OR CONTAINER: Red or Gold
SPECIAL HANDLING: Collect specimen in chilled tube from a
fasting patient; place on ice and protect
from light
SPECIMEN VOLUME: 2 mL
MINIMUM VOLUME: 1.2 mL
TEST AVAILABILITY: Daily
TURNAROUND TIME: 8-10 days
REFERENCE RANGE: 19-83 ug/dL
METHODOLOGY: High-pressure liquid chromatography (HPLC) with UV
detection
CLINICAL USE: Differential diagnosis of hypervitaminosis A
CPT: 84590
[VITB12] Vitamin B12 Level
SPECIMEN REQUIRED: Refrigerated or frozen serum. Can use Lithium
Heparin if not ordered with Folate.
TUBE OR CONTAINER: Gold or Red
SPECIAL HANDLING: Draw before Schilling test, transfusion, or
B12 therapy; Protect specimen from light
SPECIMEN VOLUME: 1 mL
MINIMUM VOLUME: 0.5 mL
TEST AVAILABILITY: Monday-Friday
TURNAROUND TIME: 24 hours
REFERENCE RANGE: 193 - 982 pg/mL
OTHER NAMES: B12; Cobalamin
METHODOLOGY: Chemiluminescence
CLINICAL USE: Detect B12 deficiency as in pernicious anemia;
diagnose folic acid deficiency
CPT: 82607
[VITB12UN] Vitamin B12 Unsaturated Binding Cap
SPECIMEN REQUIRED: Refrigerated serum or plasma
TUBE OR CONTAINER: Red, Gold or Lavender(EDTA)
SPECIAL HANDLING: Must draw before Schilling test, transfusions,
or B12 therapy is started. No isotopes
administered 24 hours prior to venipuncture
Discontinue B12 supplements at least 72 hours
prior to specimen collection
SPECIMEN VOLUME: 2 mL
MINIMUM VOLUME: 0.5 mL
TEST AVAILABILITY: Daily
TURNAROUND TIME: 2-8 days
REFERENCE RANGE: 725-2045 pg/mL
METHODOLOGY: Radioimmunoassay (RIA)
CLINICAL USE: Differential diagnosis of polycythemia vera from
secondary/relative polycythemias; evaluate
macrocytic/megaloblastic anemia