LDH, CSF

Orderable EAP code:

LAB00550

Billable EAP Codes:

80001757 x 1

CPT Codes:

83615 x 1

Lab Section:

Core Lab

Turnaround Time:

Routine: 2 Hours

Urgent: 1 Hour

Test Schedule:

24 hours, 7 days a week.

Units:

U/L

Specimen Requirements:

2 mL spinal fluid in a CSF vial.

Pediatric Specimen Requirements:

0.5 mL in a CSF vial,

Reference Range:

0 up to 2 years: Less than 70 U/L

2 years and older: Less than 40 U/L

Comments:

Specimen Stability: Stable 2 days at room temperature.

Synonyms:

LD, Lactate Dehydrogenase

LDH, Body Fluid

Orderable EAP code:

LAB00132

Billable EAP Codes:

80001756 x 1

CPT Codes:

83615 x 1

Lab Section:

Core Lab

Turnaround Time:

Routine: 2 Hours

Urgent: 1 Hour

Test Schedule:

24 hours, 7 days a week.

Units:

U/L

Specimen Requirements:

2 mL body fluid in a body fluid container.

Pediatric Specimen Requirements:

0.5 mL in a 4 mL RED top tube or urine sample cup

Reference Range:

None available.

Comments:

Specimen Stability: 2 days at room temperature.

Synonyms:

Lactate Dehydrogenase

Lactose Tolerance Test

Orderable EAP code:

LAB00123

Billable EAP Codes:

80001745 x 1 (Fasting) 80001749 x 1 (45 Minute) 80001748 x 1 (60 Minute) 80001750 x 1 (90 Minute)

CPT Codes:

82951 x 1 82952 x 3

Lab Section:

Core Lab

Turnaround Time:

Routine: 2 Hours

Urgent: 1 Hour

Test Schedule:

24 hours, 7 days a week.

Units:

mg/dL

Specimen Requirements:

2 mL blood in a GRAY top vacutainer.

Pediatric Specimen Requirements:

1 mL blood in a GRAY top vacutainer.

Reference Range:

See comments.

Comments:

Used in the diagnosis of small bowel lactase deficiency. Glucose Tolerance Test should be run the day before Lactose Tolerance to be sure that glucose is absorbed properly. Patient must be fasting before Lactose Tolerance Test. Administer 50 g of lactose orally for an adult. Draw blood samples at 0, 15, 30, 45, 60 and 90 minutes. Lactase deficient individuals show blood sugar levels that rise not more than 20 mg/dL over the fasting level.

Synonyms:

GGT, Lactose Intolerance, Glucose Tolerance

Lactate

Orderable EAP code:

LAB00124

Billable EAP Codes:

80001754 x 1

CPT Codes:

83605 x 1

Lab Section:

Core Lab

Turnaround Time:

Routine: 2 Hours

Urgent: 1 Hour

Test Schedule:

24 hours, 7 days a week.

Units:

mmol/L

Critical Values:

Greater than 2.0 mmol/L

Specimen Requirements:

0.4 mL blood in a heparinized syringe. Send heparinized syringe ON ICE to Lab immediately.

OR 4 mL blood in a GREEN top lithium heparin tube ON ICE to Lab immediately.

Pediatric Specimen Requirements:

0.4 mL blood in a 1 mL heparinized syringe. Send heparinized syringe ON ICE to Lab immediately.

OR 0.6 mL blood in a GREEN top lithium heparin tube ON ICE to Lab immediately.

Reference Range:

0.5 to 2.0 mmol/L

Comments:

Specimens sent without ice will not be analyzed.

Not suitable for add-ons; must be a new collection.

Synonyms:

Lactic Acid

Ketone Bodies, Screen, Urine

Orderable EAP code:

LAB00133

Billable EAP Codes:

80001691 x 1

CPT Codes:

82010 x 1

Lab Section:

Core Lab

Turnaround Time:

Routine: 2 Hours

Urgent: 1 Hour

Test Schedule:

24 hours, 7 days a week.

Units:

mg/dL

Specimen Requirements:

Random collection urine, urine cup.

Pediatric Specimen Requirements:

10 mL urine in a clean cup.

Reference Range:

Negative

Comments:

Test detects acetoacetate only. B-hydroxybutyrate and acetone are not measured.

Synonyms:

Acetoacetate, Urine

Ketone Blood

Orderable EAP code:

LAB00079

Billable EAP Codes:

80001690 x 1

CPT Codes:

82010 x 1

Lab Section:

Core Lab

Turnaround Time:

Routine: 2 Hours

Urgent: 1 Hour

Test Schedule:

24 hours, 7 days a week.

Units:

mg/dL

Specimen Requirements:

4 mL blood in a GOLD top tube.

Pediatric Specimen Requirements:

0.5 mL in a peds RED top tube.

Reference Range:

Negative

Comments:

Test detects acetoacetate only. It does not measure total ketones.

Synonyms:

Acetoacetate

Insulin Total, Serum (Random)

Orderable EAP code:

LAB00091

Billable EAP Codes:

80001329 x 1

CPT Codes:

83525 x 1

Lab Section:

Core Lab

Turnaround Time:

Routine: 12 Hours

Urgent: N/A

Test Schedule:

Daily, 8 am to 8 pm.

Units:

MicroIU/mL

Specimen Requirements:

4.0 mL blood in a RED top tube.

Pediatric Specimen Requirements:

1.0 mL blood in a RED top tube.

Reference Range:

Fasting: 3 to 25 microIU/mL

Non-fasting: not established.

Synonyms:

Insulin

Insulin Glucose Tolerance Test

Orderable EAP code:

LAB00605

Billable EAP Codes:

80001741 x 1 (Fasting) 80001740 x 1 (Tube 1) 80001735 x 1 (Tube 2) 80001736 x 1 (Tube 3) 80001737 x 1 (Tube 4) 80001738 x 1 (Tube 5) 80001739 x 1 (Tube 6) 80001732 x 1 (Tube 7) 80001733 x 1 (Tube 8) 80001734 x 1 (Tube 9)

CPT Codes:

82947 x 10

Lab Section:

Core Lab

Turnaround Time:

Routine: 2 Hours

Urgent: 1 Hour

Test Schedule:

24 hours, 7 days a week.

Units:

mg/dL

Specimen Requirements:

2 mL blood in a GRAY top tube.

Reference Range:

See comments.

Comments:

The patient must fast overnight prior to the Insulin Tolerance Test. Insulin is injected intravenously corresponding to 0.1 unit per kg of body weight. Collect blood samples for glucose at fasting, 15 minutes, 30 minutes, 45 minutes, 1 hour, and 90 minutes. Normally, the 30-minute blood glucose value is about 50% of the fasting level and by 90 minutes the glucose level returns to the fasting level.

Specimen Stability: up to 24 hours at room temperature.

Synonyms:

Glucose Tolerance

GTT

ITT

Hemoglobin, Whole Blood

Orderable EAP code:

LAB00680

Billable EAP Codes:

80001808 x 1

CPT Codes:

85018 x 1

Lab Section:

Core Lab

Turnaround Time:

Routine: 2 Hours

Urgent: 1 Hour

Test Schedule:

24 hours, 7 days a week.

Units:

g/dL

Critical Values:

Less than 6.6 g/dL

Greater than 20.0 g/dL

Specimen Requirements:

3 mL blood in a LAVENDER top tube. Stable for 24 hours at room temperature. Do not freeze.

Pediatric Specimen Requirements:

0.5 mL blood in a LAVENDER Pediatric tube. Stable for 24 hours at room temperature. Do not freeze.

Reference Range:

Hemoglobin g/dL
 Patient's age  Male  Female
 0 up to 30 days  10.0 to 18.0  10.0 to 18.0
 30 days up to 6 months  9.5 to 14.0  9.5 to 14.0
 6 months up to 2 years  10.5 to 13.5  10.5 to 13.5
 2 up to 6 years  11.5 to 13.5  11.5 to 13.5
 6 up to 12 years  11.5 to 15.5  11.5 to 15.5
 12 up to 18 years  13.0 to 16.0  12.0 to 16.0
 18 up to 150 years  13.5 to 17.5  12.0 to 16.0

Comments:

Clotted specimens are unacceptable.

Hematocrit

Orderable EAP code:

LAB00230

Billable EAP Codes:

80001804 x 1

CPT Codes:

85014 x 1

Lab Section:

Core Lab

Turnaround Time:

Routine: 2 Hours

Urgent: 1 Hour

Test Schedule:

24 hours, 7 days a week.

Units:

%

Critical Values:

Less than or equal to 19.7%, or greater than 60.0%

Specimen Requirements:

3.0 mL blood in a LAVENDER top tube. Stable for 24 hours at room temperature. Do not freeze.

Pediatric Specimen Requirements:

0.5 mL in a 0.5 mL LAVENDER top pediatric tube. Stable for 24 hours at room temperature. Do not freeze.

Reference Range:

Hematocrit % 
 Patient's age  Male  Female
 0 up to 30 days   31.0 to 55.0  31.0 to 55.0
 1 up to 6 months  28.0 to 42.0  28.0 to 42.0
 6 months up to 2 years   33.0 to 39.0  33.0 to 39.0
 2 up to 6 years   34.0 to 40.0  34.0 to 40.0
 6 up to 12 years   35.0 to 45.0  35.0 to 45.0
 12 up to 18 years   37.0 to 49.0  36.0 to 46.0
 18 up to 150 years   41.0 to 53.0  36.0 to 46.0

Comments:

Clotted specimens are unacceptable.

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