Glucose, Plasma, Serum, Spinal Fluid, or Urine

Test Code

556

CPT Codes
82945-Urine or spinal fluid (if appropriate); 82947-Plasma or serum (if appropriate)

Preferred Specimen

Submit only 1 of the following specimens:

Plasma
Container/Tube: Green-top (heparin) tube(s)
Specimen Volume: 3 mL (minimum volume: 0.5 mL) of plasma
Collection Instructions: Fasting or nonfasting. Neonate specimen should be collected in heparinized CAPIJECT.
Note: 1. Indicate plasma and as fasting or nonfasting. 2. Label specimen appropriately (plasma and as fasting or nonfasting).

Serum
Container/Tube: Serum gel tube(s)
Specimen Volume: 3 mL (minimum volume: 0.5 mL) of serum
Collection Instructions: Fasting or nonfasting
Note: 1. Indicate serum and as fasting or nonfasting. 2. Label specimen appropriately (serum and as fasting or nonfasting).

Spinal Fluid
Container/Tube: Sterile vial(s)
Specimen Volume: 1 mL of spinal fluid
Collection Instructions:
Note: 1. Indicate spinal fluid. 2. Label specimen appropriately (spinal fluid).

Urine
Container/Tube: Plastic urine container(s)
Specimen Volume: 25 mL from a 24-hour urine collection
Collection Instructions: No preservative.
Note: 1. 24-Hour volume is required. 2. Follow instructions in Urine Collection in Special Instructions. 3. Indicate urine. 4. Label specimen appropriately (urine).

Instructions

Venipuncture should occur prior to sulfasalazine administration due to the potential for falsely depressed results.
Venipuncture should occur prior to sulfapyridine administration due to the potential for falsely elevated results.

Methodology
Hexokinase

Setup Schedule

Monday through Sunday

Reference Range

PLASMA OR SERUM
FASTING
0-24 hours: 45-115 mg/dL
24 hours-30 days: 55-115 mg/dL
>=30 days: 70-100 mg/dL
Critical values (automatic call-back):
<72 hours: <40 mg/dL or >350 mg/dL
>72 hours: <50 mg/dL or >400 mg/dL
NONFASTING
70-200 mg/dL
Premature and newborn infants 55-115 mg/dL
Critical values (automatic call-back):
<72 hours: <40 mg/dL or >350 mg/dL
>72 hours: <50 mg/dL or >400 mg/dL

SPINAL FLUID
40-75 mg/dL

URINE
<0.5 g/24 hours

Performed By
CoxHealth

The CPT Codes provided in this document are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.