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Section-L

Comment: 

To be ordered when sending a message to the Lab. 
This will not be accepted as a means to correct time or date on an order already placed.

 

POWERCHART NAME

LACTIC ACID BODY FLUID                          TEST OBSOLETE

MERCY TEST NAME

LACTATE BF                    

MERCY LAB CODE

FLCT

 

POWERCHART NAME

LACTIC ACID CSF

MERCY TEST NAME

LACTATE CSF

MERCY LAB CODE

CLCT

Specimen:
  • 0.5 ml spinal fluid. 
  • Place tube immediately on ice and deliver to the Lab within 15 minutes of collection. 
  • Avoid hemolysis.
Stability;

Stable 24 hours at 2-8 degres Celcius.  

Performed:  Within 8 hours of receipt.  Available stat
Reference value:

0-15 years: 1.1-2.8 mmol/L
>15 years:  0.6-2.4 mmol/L

Method: Enzymatic
CPT Code:  83605

 

POWERCHART NAME

LACTIC ACID LEVEL

MERCY TEST NAME

LACTATE PLASMA

MERCY LAB CODE

LCT

Specimen: 
  • 0.5 ml Sodium Flouride plasma from gray top tube.
  • Place tube in ice bath immediately after collection. 
  • Deliver to Lab immediately.

Regional Lab Clients:  Centrifuge in refrigerated centrifuge (or freeze holders first if you don’t have refrigerated centrifuge). Separate the plasma from the cells within 15 minutes of drawing.  Send plasma refrigerated. 

Stability:
  • Stable in separated plasma:
  • 8 hours room temperature (15-25 degrees Celcius) 
  • 14 days refrigerated (2-8 degrees Celcius). 
Cause for rejection: Serum not acceptable.  Avoid hemolysis. 
Processing:
  • Centrifuge within 15 minutes in a refrigerated centrifuge.
  • Remove plasma and place on ice.
Performed: Within 8 hours of receipt.  Available stat
Reference value:  0.5- - 2.2 mmol/L
Method:  Enzymatic
CPT Code: 83605

 

TEST NAME

LACTIC ACID

See:  Lactate Body Fluid  
          Lactate CSF  
          Lactate Plasma   

 

TEST NAME

LACTOFERRIN

See:  FECAL LEUKOCYTE

 

POWER CHART NAME

LAMELLAR BODY COUNT

MERCY TEST NAME

LAMELLAR BODY COUNT

MERCY LAB CODE

LBC

Specimen: 1-3 ml fresh amniotic fluid.
Cause for Rejection:  Mucous present.
Processing: Do not centrifuge. Analyze immediately or refrigerate up to 10 days.  May be frozen.
Performed:  Within 8 hours of receipt.  Available stat.
Reference Value:

LBC: >50,000 mcl suggests fetal lung maturity
       15,000 to 50,000 mcl equivovol result
< 15,000 mcl suggests fetal lung immaturity

Method:  LBC: Automated Cell Counter
CPT Code: LBC 83664

 

POWERCHART NAME

LAMOTRIGINE  (LAMICTAL) LEVEL

MERCY TEST NAME

LAMOTRIGINE*

MERCY LAB CODE

LAMO

Specimen: 
  • 1 ml serum from a SST or plain red top tube.  Minimum 0.5 ml. 
  • Draw specimen immediately before next scheduled dose of at least 24 hours after last dose.
Processing:  Send refrigerated to Mayo. Ambient or frozen also acceptable.  Mayo order code LAMO.
Performed:  1-2 days.  Test set up Monday through Sunday.
Reference value: Reference ranges included with report.
Method:  High Turbulence Liquid Chromatography-Tandem Mass Spectrometry (HTLC-MS/MS)
CPT Code: 80175

 

TEST NAME

LANOXIN

See: Digoxin

 

POWERCHART NAME

RHEUMATOID FACTOR

MERCY TEST NAME

LATEX RA

MERCY LAB CODE

RA

Specimen: 
  • Preferred; 0.5 ml serum in an SST tube. 
  • Also acceptable: 0.5 ml serum from a plain red top tube. 
  • Refrigerate.
Cause for rejection: In very rare cases gammopathy, especially monoclonal IgM (Waldenstrom's macroglobulinemia), may cause unreliable results.
Performed:  Within 8 hours of receipt.
Reference value:

Adults:  0-14 IU/ML
Result is quantitative so a titer is not needed.

Method:    Latex Particle Turbidimetric
CPT Code:  86431

 

TEST NAME

LATEX RA BODY FLUID*             TEST OBSOLETE

MERCY TEST NAME

 

MERCY LAB CODE

 

 

POWERCHART NAME

LDH (LACTATE DEHYDROGENASE)

MERCY TEST NAME

LD

MERCY LAB CODE

LD

Specimen: 
  • Preferred in house: 0.5 ml lithium heparin plasma from a PST tube.
  • Preferred reference lab: 0.5 ml serum from a SST tube. 
  • Also acceptable: Sodium heparin, Amm heparin, or serum from a plain red top tube. 
  • Ambient or refrigerated specimen acceptable, specimen must be run within 24 hours of collection. Do not freeze specimen.
Cause for rejection: Do not use hemolyzed specimens.
Performed:  Within 8 hours of receipt.  Available stat.
Reference value:

140-271 IU/L

Method:  Lactate to Pyruvate
CPT Code:  83615

 

POWERCHART NAME

LDH (LACTATE DEHYDROGENASE) BODY FLUID

MERCY TEST NAME

LD BF

MERCY LAB CODE

FLLD

Specimen:  0.5 ml body fluid placed in red top tube.  Refrigerate.
Comment:  Indicate specimen source in comment.
Performed:  Within 8 hours of receipt.  Available stat.
Method:    Lactate to Pyruvate
CPT Code:   83615

 

TEST NAME

LDL CALCULATED (Low Density Lipoprotein)

Included in:  Lipid Panel.  Cannot be ordered individually.
Comment: Calculation invalid when triglyceride is >400 mg/dl.
Reference value:

The National Cholesterol Education Program of the National Heart, Lung, and Blood Institute has announced the following guidelines:
                  Optimal--------------<100mg/dl
                  Near Optimal--------100 – 129mg/dl
                  Borderline high------130 – 159mg/dl
                  High-------------------160 – 189mg/dl
                  Very High-------------≥190mg/dl

Method:    Calculation

 

TEST NAME

LDL (Cholesterol) DIRECT

See: Direct LDL

 

TEST NAME

LEAD URINE

See:  Metals Heavy/Essential 24-Hour Urine*

 

POWERCHART NAME

LEAD LEVEL

MERCY TEST NAME

LEAD WHOLE BLD*

MERCY LAB CODE

 PB1

Specimen: 
  • 500 mcl whole blood from purple tob (EDTA tube).   Minimum:  200 mcl is acceptable for capillary collection specimens.
  • Alternatively, use blue top (sodium citrate) or green top (sodium heparin) tubes.
  • Venous samples (3.0 ml) are required for follow-up of elevated lead levels. 
Stability:

EDTA specimens are stable 14 days refrigerated.  

Cause for rejection: Clotted specimens.
Processing: 

Complete Blood Lead form from University Hygienic Lab (UHL)
Apply bar code label from UHL to the above form.  Attach corresponding tube label from UHL to specimen. Send by U.S. Mail to address below.

Regional Lab Clients:  Need to order the collection kit directly from University Hygienic Lab. 
Regional lab clients are responsible for collection process, mailing kit, billing, and reporting.

University Hygienic Laboratory
Iowa Laboratories Facility
PO Box 249
Ankeny, IA  50021-9959
515-725-1600

Performed:  2 days  
Reference value:

< 16 years: 0 - 10 mcg/dl
16 and older: 0 - 20 mcg/dl

CPT Code: 83655

 

TEST NAME

LECITHIN-SPHINGOMYELIN RATIO

See: Fetal Lung Profile AF*

 

POWERCHART NAME

LEGIONELLA ANTIGEN EIA URINE

MERCY TEST NAME

LEGIONELLA R UR*

MERCY LAB CODE

ULEG

Specimen:  0.5 ml random urine.  Minimum 0.25 ml. No preservative.  Refrigerate.
Processing: Send refrigerated to Mayo. 
Performed: 1-4 days.  Test set up Monday through Friday; 12 p.m.
Reference value:  Included in report.
Method:  Immunochromatographic membrane assay
CPT Code: 87899

 

POWERCHART NAME

LEGIONELLA ANTIBODY IgG IgM

TEST NO LONGER AVAILABLE 6/11/2007

See: Legionella Antibody IgM

 

POWERCHART NAME

LEGIONELLA ANTIBODY IgM

MERCY TEST NAME

LEGIONELLA IgM*

MERCY LAB CODE

LEGIGM

Specimen: 1.0 ml of serum from a plain red top or SST.  Minimum 0.1 ml.
Comments: 

IgM antibodies to Legionella pneumophila serogroups 1,6 additional L. pneumophila serogroups (2,3,4,5,6,8) species are measured using an IgM specific conjugate.

We recommend that the IgM test always be performed in conjuction with polyvalent antibody test.

The IgM response to Legionella tends to develop concurrently with the IgG response and may remain elevated as long as the IgG response remains elevated. Cross-reactions have been described with several species of bacteria and mycoplasma.

Processing: 

Send ambient to Mayo.   Ambient 7 days, refrigerated 14 days, or frozen 30 days acceptable.  Mayo order code FLEGM.

Method:   Indirect Fluorescent Antibody (IFA)
CPT Code: 86713 x2

 

POWERCHART NAME

CULTURE LEGIONELLA

MERCY TEST NAME

LEGIONELLA CULTURE*    

MERCY LAB CODE

LEGCLT

Order: 

Specify site when ordering. 

This test no longer includes a Legionella smear. The Legionella PCR test has replaced the smear and will need to be ordered separately, if needed. (see Legionella PCR)

Specimen: 

Bronchial washings, broncho-alveolar lavage, bronchus fluid, chest fluid, chest tube drainage, empyema, endotracheal specimens, fresh lung tissue, induced sputum, lingual (lung), lung biopsy, pericardial fluid or tissue, heart valves, pleura, pleural fluid, protected catheter brush, sputum, thoracentesis fluid, tracheal secretion, transbronchial biopsy, or trans-tracheal aspirate.
Send in a screw-capped, sterile container.
Refrigerate. Maintain sterility and forward promptly.

Cause for rejection:

NO frozen or ambient specimens will be accepted.
Do not transport in culturettes.

RL Client Comments:

  • Write LEGIONELLA CULTURE on order form.  Indicate source on the form.
  • Send refrigerated.

Processing:

Send specimen in a screw-capped, sterile container. Maintain sterility. Send refrigerated to Mayo. 
Mayo order code LEGI

Performed:

Monday through Sunday; Continuously

Reference value: 

Negative
(Positive specimens will be identified/speciated by 16S rRNA gene sequencing, at an additional charge)

Method:

Conventional culture

CPT Code:

Culture 87081  
Tissue processing (if appropriate) 87176

  

POWERCHART NAME

 LEGIONELLA PCR

MERCY TEST NAME

LEGIONELLA PCR

MERCY LAB CODE

LEGPCR

Specimen: 

1 mL Bronchial washings, bronchoalveolar lavage,lung tissue,pleural fluid, sputum, transtracheal aspirate, or tracheal secretions.
Send in a screw-capped, sterile container.
Send Refrigerated. Maintain sterility and forward promptly.
[Specimen source is requred}  Mayo order code LEGRP

Performed:

Monday through Sunday

Reference value: 

Included with report.

Method:

Rapid Polymerase Chain Reaction (PCR)

CPT Code:

87801

  

TEST NAME

LEUKOCYTE ALKALINE PHOSPHATASE (LAP STAIN)

See:  LAP Stain

 

TEST NAME

LEUKOCYTE REMOVAL FILTER FOR RED CELLS

See:  Crossmatch

 

TEST NAME

LEUKOCYTE REMOVAL FILTER FOR PLATELETS

TEST NO LONGER AVAILABLE 1/8/2006

 

POWERCHART NAME

LEUKEMIA-LYMPHOMA IMMUNOPHENOTYPING BY FLOW CYTOMETRY

MERCY TEST NAME

LEUK LYMPH PHNO TYP*

MERCY LAB CODE

LKLYPH

Specimen: 

Blood, Bone marrow, tissue (lymph nodes) other than blood or bone marrow, fluids from serous effusions.
Peripheral blood: 10 ml peripheral blood in yellow-top ACD solution B tubes.  Send whole blood. Include 5-10 unstained peripheral blood smears if possible.

Bone marrow: 1-5 ml bone marrow in ACD solution B tube.  Bone marrow specimen is stable 4 days. On request, we may hold specimen pending pathologists report and request that test be sent out.

Refer to Mayo catalog for tissue or fluid specimens.

Processing: Send to Mayo LCMS at room temperature.  DO NOT FREEZE.
Performed:  1-4 days.  Test set up at Mayo Monday through Saturday.
Reference value: An interpretation of the immunophenotypic findings and correlation with the morphologic features will be provided for every case.
Method:    Flow cytometry.
CPT Code: 

Every phenotyping will be charged for the Triage Panel (Leukemia Phen Triag)

85060 Hematopatholgy  Consultation
88184 Flow Cytometry, First Marker
88185 (x5) Flow Cytometry Each Additional Marker

The following can be used by Mayo to get the interpretation.  These will be reflex ordered by Mayo as needed at an additional charge.  They will show on the report if added.

88185 (x9) Granular Lymphocytic Leukemia flow Panel (NK/GLL Panel)
88185 (x13) Leukemia Immunophenotyping, Acute Panel ((Leuk Phen Acute Panel)
88185 (x7) Leukemia Immunophenotyping, B-Panel (Leuk IMM B Panel)
88185 (x6) Leukemia Immunophenotyping,  T-Panel ( leuk IMM T Panel)
88185 (x6) Leukemia Immunophenotyping, Plasma Cell Screen (Plasma Cell Screen)
88185 (X5) Myeloid Blast Assessment Panel
88185 (x26) T-Cell Clonality by Flow Cytometry of TCR V Beta (TCR V Beta)

 

POWERCHART NAME

LEVETIRACETAM (KEPPRA) LEVEL

MERCY TEST NAME

LEVETIRACETAM*

MERCY LAB CODE

LEVTR

Specimen: 

  • 1.0 ml serum from plain red top tube or SST tube. 
  • Draw blood immediately before next scheduled dose.
  • For sustained-release formulations ONLY, draw blood a minimum of 12 hours after last dose.

Processing:

Send refrigerated to Mayo. Ambient or frozen acceptable. Mayo order code  LEVE.

Performed: 

Monday through Sunday

Reference value: 

Included with report

Method: 

High Turbulence Liquid Chromatography-Tandem Mass Spectrometry (HTLC-MS/MS)

CPT Code: 

80177

 

POWERCHART NAME

LH   (Luteinizing Hormone)

MERCY TEST NAME

LH

MERCY LAB CODE

LH

Specimen: 
  • Preferred in house: 0.5 ml serum from a SST tube.
  • Preferred reference lab: 0.5 ml serum from a SST tube.
  • Also acceptable: serum from a plain red top tube or heparin plasma from a green top tube.
Stability:

8 hours room temperature, 48 hours referigerated, freeze if >48 hours.  

Cause for rejection:  Grossly hemolyzed specimens unacceptable.
Processing:

Regional Lab Clients:  Freeze if not received at Mercy Medical Center - North Iowa Laboratory within 48 hours of collection.

Performed: Within 8 hours of receipt..
Reference Value MALE Table:

Male

Age

Reference Range

 

0-15 days

Not Established

 

16 days to 10 years

0.3-2.8 MIU/ML 

 

11 years

0.3-1.82

 

12 years

0.3-4.0

 

13 years

0.3-6.0

 

14 years

0.5-7.9

 

15-16 years

0.5-10.8

 

17 yearss

0.9-5.9

 

>18 years

1.8-8.6

 

 

 

 

Tanner Stage

Reference Range

 

        I

0.3-2.7

 

        II

0.3-5.1 

 

        III

0.3-6.9 

 

        IV

0.5-5.3

 

        V

0.8-11.8

 

Puberty onset occurs for boys at a median age of 11.5 (+/- 2) years.  For boys, there is no proben relationship between puberty onset and body weight or ethnic origin.  Progression through tanner stages is variable.  Tanner stage V (adult) should be reached by age 18.

 

Reference Value FEMALE Table:

Female

Age

Reference Range

 

0-15 days

Not established

 

16 days – 6 years

0.3-1.9 MIU/ML 

 

7-8 years

<3.0

 

9-10 years

<4

 

11 years

<6.5

 

12 years

0.4-9.9

 

13 years

0.3-5.4

 

14 years

0.5-31.2

 

15 years

0.5-20.7

 

16 years

0.4-29.4

 

17 years

1.6-12.4

 

>/= 18 years

Premenopusal
   Follicular:  2.1-10.9              Midcycle:  19.2-103.0    Luteal:  1.2-12.9 Postmenopausal:  10.9-58.6

 

 

 

 

Tanner Stages

Reference Ranges

 

    I

<2.0

 

    II

<6.5

 

    III

0.3-17.2

 

    IV

0.5-26.3

 

    V

0.6-13.7

 

Puberty onset (transition from Tanner stage I to Tanner stage II) occurs for girls at a median age of 10.5 (+/- 2) years.  There is evidence that it may occur up to 1 year earlier in obese girls and in African-American girls.  Progression through Tanner stages is variable.  Tanner stage V (adult) should be reached by age 18.

Method: Sandwich Immunoassay Chemiluminescent
CPT Code:  83002

 

POWERCHART NAME

LIPASE

MERCY TEST NAME

LIPASE            

MERCY LAB CODE

LIPS

Specimen: 
  • Preferred in house: 0.5 ml lithium heparin plasma from a PST tube.
  • Preferred reference lab: 0.5 ml serum from a SST tube.
  • Also acceptable: Sodium Heparin plasma, and serum from a plain red top tube. 
Stability:

4 hours room temperature, 48 hours refrigerated, freeze if >48 hours. 

Performed: Within 8 hours of receipt.  Available stat.
Reference value: 11-82 IU/L
Method: Colorimetric
CPT Code:     83690

 

POWERCHART NAME

LIPID PANEL

MERCY TEST NAME

LIPID PNL

MERCY LAB CODE

LIPD

Patient preparation:
  • Patient must be fasting 9-12 hours with no alcohol 24 hours prior to specimen collection. 
  • Evening meal prior to test should contain no fatty foods and should be completed before 1800. 
Includes: Cholesterol, Triglyceride, HDL Cholesterol, Calculated LDL, Cholesterol/HDL Ratio.
Specimen: 
  • Preferred in house: 0.5 ml of lithum heparin plasma from a PST tube. 
  • Preferred reference lab: 0.5 ml serum from a SST tube. 
  • Also acceptable: Sodium heparin plasma, and serum from a plain red top tube. 
Stabilty:

 8 hours room temperature, 48 hours refrigerated. freeze if >48 hours.

Performed: Within 8 hours of receipt.
Comment:  

The National Cholesterol Education Program recommends that individuals be seated for at least 5 minutes prior to phlebotomy to avoid hemo concentration.

Reference value:
2001 GUIDELINES FROM THE NATIONAL CHOLESTEROL EDUCATION PROGRAM

LIPID

LOW

OPTIMAL

NEAR OPTIMAL

BORDERLINE HIGH

HIGH

VERY HIGH

Adult Total Cholesterol

 

<200

 

200 – 239

>240

 

Adult LDL Cholesterol

 

<100

100 – 129

130 – 159

160 - 189

>190

HDL Cholesterol

<40

>60

40 – 59

     

Triglycerides

   

Male <150
Female <135

150 – 199

200-499

≥500

Method:  See individual test entry.
CPT Code:  80061

 

TEST NAME

LIPID PLUS PANEL

Order Lipid Panel plus AST and CK. 

 

TEST NAME

LIPOPROTEIN PROFILE*

MERCY TEST NAME

LIPOPROTEIN PROFILE*

MERCY LAB CODE

LPPROF

Patient preparation:
  • Draw following an overnight (12 – 14 hour) fast.
  • Patient must not consume any alcohol for 24 hours before specimen is drawn.
Specimen:  5 ml serum from a plain, red-top tube, serum gel is also acceptable
Processing:  Send refrigerated to Mayo.  Frozen acceptable.  Mayo order code  LMPP. 
Comment: Patient’s age and gender are required on request form for processing.
Performed: 2 days.  Test set up Monday through Thursday, Sunday.
Method: Ultracentrifugation/Electrophoresis/Automated Enzymatic Colorimetric Analysis
CPT Code:    

80061 Lipid Panel
82172 Apolipoprotein B
82664 Electrophoresis Cholestrol Lp (a)

 

POWERCHART NAME

LITHIUM LEVEL

MERCY TEST NAME

LITHIUM           

MERCY LAB CODE

LI

Specimen: 
  • Preferred in house; 0.5 ml serum from a SST tube.  
  • Preferred reference lab: 0.5 ml serum from a SST tube. Aliquot specimen. 
  • Also acceptable: EDTA plasma, and serum from a plain red top tube.  
  • Collect at least 12 hours following last dose.
Stability:

 7 days refrigerated, freeze if >7 days.

Comment:   Indicate time last dose in comment.
Cause for rejection: Do not use grossly hemolyzed specimens.
Performed: Within 8 hours of receipt.  Available stat.
Reference value:  Therapeutic range:  1.0 - 1.5 mmol/L
Method: Colorimetric
CPT Code:   80178

 

POWERCHART NAME

LIVER KIDNEY MICROSOMAL ANTIBODIES

MERCY TEST NAME

LIV/KID MICROS T1*

MERCY LAB CODE

LKM1

Specimen: 0.5 ml serum from a SST tube or a plain red top tube.  Minimum 0.4 ml.
Comment:  Useful for evaluation of patients with chronic hepatitis (autoimmune).
Processing:   Send refrigerated to Mayo. Refrigerated <= 7 days, or frozen acceptable.  Mayo order code LKM.
Performed: 1-4 days.  Test set up Monday, Wednesday, Friday at Mayo.
Reference value: 

Included with test results.

Method:    Enzyme – Linked immunosorbent Assay (ELISA)
CPT Code:        86376

 

TEST NAME

LIVER PANEL

See:  Hepatic Function Panel

 

TEST NAME

LOW DENSITY LIPOPROTEIN

See:  LDL

 

TEST NAME

LOW MOLECULOR WEIGHT HEPARIN

See:  Factor X A

 

TEST NAME

LS RATIO

See: Fetal Lung Profile AF*.  

 

TEST NAME

LS SHAKE TEST

See: Lamellar Body Count

 

TEST NAME

LUNG MATURITY

See:  Lamellar Body Count

 

TEST NAME

LUTEINIZING HORMONE

See:  LH

 

POWERCHART NAME

LYME DISEASE EVALUATION

MERCY TEST NAME

LYME DIS SERO EVAL

MERCY LAB CODE

LYME

Specimen:  2.0 ml serum from a plain red-top or serum gel tube
Processing: Specimen is stable 7 days refrigerated. (A frozen specimen is also acceptable, but not required)
Comment:

This test detects Lyme Disease antibodies IgG and IgM. Each antibody will be reported separately. Any specimen with an equivocal or positive IgG and/or IgM will be referred to Mayo Med Labs for confirmatory testing, using the Lyme Disease Ab, Western Blot assay, at an additional charge.

RL Client Comments: Send 2.0 mls of serum refrigerated to Mercy lab. (Frozen is acceptable, but not necessary)
Performed: Wednesday, 1200 cutoff
Method: Enzyme Immunoassay (EIA)
Reference Range: Negative IgG and IgM   (Positive or Equivocal results will be forwarded to Mayo Med Labs for further testing, see above)
CPT Code:

86618 x2  Lyme Disease Antibody, IgG and IgM (EIA) screen
86617 x2  Lyme Disease Western Blot confirmation, if appropriate

 

TEST NAME

LYMPHOCYTE TYPING

See:  T&B Cell QN By Flow Cytometry*

 

TEST NAME

LYTES

See: Electrolytes
       Sodium/Potassium Random Urine

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