A lactic acid test is a blood test that measures the level of lactic acid made in the body. Most of it is made by muscle tissue and red blood cells. When the oxygen level in the body is normal, carbohydrate breaks down into water and carbon dioxide. When the oxygen level is low, carbohydrate breaks down for energy and makes lactic acid.

Specimen: Serum

Reference Values: <2.2 mmol/L

Method:

Loinc: 2524-7

Lactic acid dehydrogenase (LDH) is an enzyme that helps produce energy. It is present in almost all of the tissues in the body and its levels rise in response to cell damage.

Specimen: Serum

Reference Values:

Adults: 313-618 U/l
1-3 Years Old: 500-920 U/l
4-6 Years Old: 470-900 U/l
7-13 Years Old: 420-750 U/l
14-15 Years Old: 360-730 U/l
16-19 Years Old: 340-670 U/l

Method: Colorimetric/Enzymatic

Loinc: 14804-9

This test measures the amount of lead in a person’s blood. Lead is a poisonous (toxic) metal that can damage the brain and other parts of the body.

Specimen: Serum

Reference Values:

Exposed Adults: <10.0 umol/l
Not Exposed Adults: <1.0 umol/l

Method: Photometric

Loinc: 32325-3

Urine lead levels may be used as well, though less commonly. In cases of chronic exposure lead often sequesters in the highest concentrations first in the bones, then in the kidneys. If a provider is performing a provocative excretion test, or “chelation challenge”, a measurement obtained from urine rather than blood is likely to provide a more accurate representation of total lead burden to a skilled interpreter

Specimen: Urine

Reference Values:

Method: Photometric

Loinc: 5677-0

Legionnaires’ disease is a serious lung disease (pneumonia) with chills, high temperature (fever) and muscle pains. You get the infection by breathing in droplets of water which contain legionella germs (bacteria) from contaminated water systems. The earlier the illness is treated with antibiotic medication, the better the likely outcome. The illness is serious and can be fatal, but it is not contagious (it cannot be passed from person to person). Legionella IgG = Past Infection

Specimen: Serum

Reference Values: Negative

Method:

Loinc: 21362-9

Legionnaires’ disease is a serious lung disease (pneumonia) with chills, high temperature (fever) and muscle pains. You get the infection by breathing in droplets of water which contain legionella germs (bacteria) from contaminated water systems. The earlier the illness is treated with antibiotic medication, the better the likely outcome. The illness is serious and can be fatal, but it is not contagious (it cannot be passed from person to person). Legionella IgM = Acute Infection

Specimen: Serum

Reference Values: Negative

Method:

Loinc: 28612-0

Leishmaniasis is caused by infection with Leishmania parasites, which are spread by the bite of infected sand flies. There are several different forms of leishmaniasis in people. The most common forms are cutaneous leishmaniasis, which causes skin sores, and visceral leishmaniasis, which affects several internal organs (usually spleen, liver, and bone marrow). Leishmania infantum IgM = Acute Infection

Specimen: Serum

Reference Values: Negative

Method: IFA

Loinc: 39577-2

Luteinizing hormone (LH, also known as lutropin and sometimes lutrophin ) is a hormone produced by gonadotroph cells in the anterior pituitary gland. In females, an acute rise of LH triggers ovulation and development of the corpus luteum. In males, where LH had also been called interstitial cell-stimulating hormone (ICSH), it stimulates Leydig cell production of testosterone. It acts synergistically with FSH.

Specimen: Serum

Reference Values:

Follicular Phase: 2.58-12.1 mIU/ml
Mid-Cycle Phase: 27.3-96.9 mIU/ml
Luteal Phase: 0.833-15.5 mIU/ml
Post-Menopause: 13.1-86.5 mIU/ml
Oral Contraceptives: 0.7-5.6 mIU/ml
Pregnancy: 0-1.5 mIU/ml

2-10 Years Old Boys: <0.5 mIU/ml
11-20 Years Old Boys: 0.5-5.3 mIU/ml
20-70 Years Old Males: 1.5-9.3 mIU/ml

Method: CLIA

Loinc: 10501-5

A lipase is an enzyme that catalyzes the hydrolysis of fats (lipids). Lipases are a subclass of the esterases. Lipases perform essential roles in the digestion, transport and processing of dietary lipids (e.g. triglycerides, fats, oils) in most, if not all, living organisms. Genes encoding lipases are even present in certain viruses.

Specimen: Serum

Reference Values: 13-60 U/L

Method: Colorimetric/Enzymatic

Loinc: 3040-3