Magnesium, Urine

Orderable EAP code:

LAB00067

Billable EAP Codes:

80001763 x 1

CPT Codes:

83735 x 1

Lab Section:

Core Lab

Turnaround Time:

Routine: 1 Day
Urgent: N/A

Test Schedule:

Batched daily, 9 am to 2 pm.

Units:

mg/24 hours

Critical Values:

None

Specimen Requirements:

Total collection 24 hr urine container; refrigerate during collection. 2 ml urine for random/spot.

Pediatric Specimen Requirements:

0.5 mL in a 4 mL RED top tube or urine sample cup for random/spot requests

Reference Range:

24 to 255 mg/24 hrs.

Synonyms:

Mg

Magnesium, Plasma

Orderable EAP code:

LAB00038

Billable EAP Codes:

80001762 x 1

CPT Codes:

83735 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

Critical Values:

Less than or equal to 0.9 mg/dL

Greater than or equal to 5.0 mg/dL

Specimen Requirements:

4 mL blood in a GREEN top, lithium heparin tube.

Pediatric Specimen Requirements:

0.5 mL in a 1.0 mL GREEN top, lithium heparin tube.

Reference Range:

1.6 to 2.6 mg/dL

Synonyms:

Mg

Liver Set

Orderable EAP code:

LAB00431

Billable EAP Codes:

80001659 x 1

CPT Codes:

80076 x 1

Lab Section:

Core Lab

Includes:

Alb, Alk Phos, T. Bili, D. Bili, AST, ALT, TOTAL PROTEIN

Turnaround Time:

Routine: 2 Hours
Urgent: 1 Hour

Test Schedule:

24 hours, 7 days a week.

Specimen Requirements:

4 mL blood in a GREEN top, lithium heparin tube.

Pediatric Specimen Requirements:

0.5 mL in a 1.0 mL GREEN top, lithium heparin tube.

Reference Range:

See individual test listings for reference ranges.

Synonyms:

Hepatic Function Panel, LFTs, Liver Function Test, Liver Panel, Liver Profile

Lithium, Serum

Orderable EAP code:

LAB00036

Billable EAP Codes:

80001672 x 1

CPT Codes:

80178 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 or equal to 1.7 mmol/L

Specimen Requirements:

4 mL blood in a RED top tube only.

Do not collect into tubes that contain gel separator.

Pediatric Specimen Requirements:

0.5 mL blood in a RED top tube only.

Do not collect into tubes that contain gel separator.

Reference Range:

0.5 to 1.5 mmol/L (Therapeutic)

Synonyms:

Carbolith, Cibalith-S, Duralith, Eskalith, Lithane, Lithizine, Lithobid, Lithonate, Lithotabs, Maniprex

Lipase

Orderable EAP code:

LAB00047

Billable EAP Codes:

80001758 x 1

CPT Codes:

83690 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

Critical Values:

Greater than or equal to 3400 U/L.

Specimen Requirements:

4 mL blood in a GREEN top, lithium heparin tube.

Pediatric Specimen Requirements:

0.5 mL blood in a 1.0 mL GREEN top, lithium heparin tube.

Reference Range:

11 to 82 U/L

LDH, Total, Plasma

Orderable EAP code:

LAB00034

Billable EAP Codes:

80001755 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:

4 mL blood in a GREEN top, lithium heparin tube.

Pediatric Specimen Requirements:

0.5 mL in a 1.0 mL GREEN top, lithium heparin tube.

Reference Range:

Values are the same for males and females.

Up to 14 Days: less than or equal to 1,017 U/L
14 Days up to 1 Year: less than or equal to 375 U/L
1 Year up to 10 Years: less than or equal to 266 U/L
10 Years up to 15 Years: less than or equal to 235 U/L
15 Years up to 19 Years: less than or equal to 207 U/L
19 Years up to 150 Years: less than or equal to 190 U/L

Comments:

Specimen should be kept at room temperature prior to measurement of LD. Specimen should NOT be frozen or refrigerated.

Specimen Stability: Plasma should be separated from cells within 2 hours of collection and is stable for up to 3 days at room temperature.

Synonyms:

LD, Lactate Dehydrogenase

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

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