L

Collection Tube Abbreviations

Test (TEST CODE)	Lab Section	Special Requirements	Reference Ranges and Critical Values	Testing Schedule and Expected Turnaround Time
Lactate, Blood (LACT)	Chem	1 GYT  Transport on ice immediately Minimum draw=3 ml	0.5 - 2.2 mMoL/L Critical: >4.0 mMol/L	24 hrs/ 7 days Results: 2 hrs STAT: 1 hr
Lactate Dehydrogenase	Chem	See LD
Lactic Acid		See Lactate.
Lambda Free Light Chains (FRLC)	Immu	See Free Light Chains
LAP	Ref	1 GRN (Na Heparin), plus six unfixed smears.  Anatomic Pathology Test Request Form Recommended.	ARUP Test Directory	Mailout: 5-7 days
LD Serum (LD) Body Fluids (FLLDH) CSF (SFLDH)	Chem	5 ml blood, 1 Light Green 3 ml fluid - If fluid is clotted or viscous it cannot be run.	Serum 100 -248 IU/L Critical: ≥ 400 IU/L (MIC, BONC, 7COP only) Body Flds: 2/3 of serum value CSF: 6 -30 IU/L	24 hrs/ 7 days Results: 2 hrs STAT: 1 hr
LD Isoenzymes (LDISO)	Ref	5 ml blood, 1 Gold Top   Avoid hemolysis.   Do Not Refridgerate	ARUP Test Directory	Mailout: 5-7 days
LDL-Cholesterol (LDL)	Chem	See Cholesterol-LDL
Lead, Whole Blood (PBBLD)	Ref	5 ml blood, royal blue with additive	ARUP Test Directory	Mailout: 5-7 days
Legionella pneumophilia Antibody, IgG by Indirect FA (LEGIG)	Ref	5 ml blood, 1 Gold Top   Label sample as "acute" or "convalescent"	ARUP Test Directory	Mailout: 5-7 days
Legionella, Urine Ag. (LEGAG)	Micro	BD (yellow top) no additive urine collection tube.	Negative Physician will be called with Positive results.	Daily Results: Same day
Legionella Culture (LGCLT)	Micro	Sputum or other respiratory specimens transported in sterile, no additive, leakproof container.	Negative Physician will be called with Positive Legionella results.	Daily Results: 7 days
Leptospira Antibodies (LEPT)	Ref	5ml blood, 1 Gold Top   Separate serum from cells ASAP	ARUP Test Directory	Mailout: 5-7 days
Leptospira Antibody, IgM by Dot Blot	Ref	4 mL SST tube or 3 mL GRN (sodium or lithium heparin) Separate serum or plasma ASAP.  Mark as "Acute" or "Convalescent" (convalescent must be received within 30 days of acute sample)	Negative:  No significant level of Leptospira IgM antibody detected. Equivocal:  Questionable presence of Leptospira IgM antibody detected.  Repeat testing in 10-14 days may be helpful. Positive:  Presence of IgM antibody to Leptospira detected, suggestive of a current or recent infection.	Mailout: M-F Results: Up to 7 weeks
Leukemia (Chronic)/ Lymphoma Panel	Flow	Sodium Heparin GRN & 1 LT.   This panel evaluates patients with atypical lymphocytosis without blasts. Call Flow lab (65953) with questions.	Interpretive report	M-F Results: 8hrs
Leukocyte Alkaline Phosphatase {LAP}	Ref	1 GRN (Na Heparin), plus six unfixed smears.  Anatomic Pathology Test Request Form Recommended.	ARUP Test Directory	Mailout: 5-7 days
Leukocytes, Fecal (FWBC)	Micro	Stool transported in sterile, no additive, leakproof container	Negative	Daily, 7am-11pm Result: Same day
LH {Luteinizing Hormone} (LH)	Chem	See Luteinizing Hormone
Librium {Chlordiazepoxide}	Ref	5 ml blood, 1 plain RT	ARUP Test Directory	Mailout: 5-7 days
Lidocaine   (LIDO)	Ref	10 ml blood, 1 large RT	ARUP Test Directory	Mailout: 5-7 days
Lipase (LIP)	Chem	5ml blood, 1 Light Green	36-60 U/L	24 hrs/ 7 days Results: 2 hrs STAT: 1 hr
Lipoprotein Electrophoresis	Ref	9 ml blood, 1 large Gold Top	ARUP Test Directory	Mailout: 10-14 days
Lithium  (LI)	Chem	5ml blood, 1 Gold Top    or sodium heparin GRN	0.6 - 1.2 mMol/L Critical Value:  >2.0 mMol/L	24 hrs/ 7 days Results: 4 hrs STAT: 1 hr
Liver-Kidney Microsome Antibodies (LKM1)	Ref	5ml blood, 1 Gold Top	ARUP Test Directory	Mailout: 5-7 days
Low Density Lipoproteins (LDL)	Chem	See Cholesterol-LDL
L/S Ratio	Chem	Test no longer performed. See Fetal Lung Maturity Screen
Lupus Anticoagulant (LUPA1)	Special Coagulation	2 BLT, specimen amount is critical to maintain proper ratio of blood to anticoagulant	Interpretive	7 days or less
Luteinizing Hormone, LH (LH2)	Chem	5 ml blood, 1 Light Green	Males: 1.24-8.62 mIU/mL Females: Postmenopausal: 10.87-58.64 Follicular: 2.12-10.89 Mid-cycle: 19.18-103.03 Luteal phase: 1.20-12.86	M, W, F
Lyme Antibodies Detection by ELISA (LYMGM)	Ref	5ml blood, 1 Gold Top    or 3 ml CSF	ARUP Test Directory	Mailout: 5-7 days
Lysozyme, Serum or Body Fluid (LYSO)	Ref	6 ml blood, 1 Gold Top   or 0.5 ml CSF, tears or other body fluid with the exception of urine	ARUP Test Directory	Mailout: 5-7 days
Lysozyme, Urine	Ref	3 ml urine from a random  collection	ARUP Test Directory	Mailout: 5-7 days
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