Analysis (O)
All our Analysis with the initial letter “O”.
Occult Blood
Fecal occult blood can be a sign of a problem in your digestive system, such as a growth, or polyp, or cancer in the colon or rectum.
Specimen: Stool
Reference Values: Negative
Method: Chrom. Immunoassay
Loinc: 29771-3
Osmolality (Serum)
A serum osmolality test measures the amount of chemicals dissolved in the liquid part (serum) of the blood. Serum osmolality is controlled partly by a hormone called antidiuretic hormone (ADH).
Specimen: Serum
Reference Values: 282-295 mOsm/kg
Method:
Loinc: 2692-2
Osmolality (Urine)
Urine osmolality is used to measure the number of dissolved particles per unit of water in the urine. As a measure of urine concentration, it is more accurate than specific gravity. Urine osmolality is useful in diagnosing disorders of urinary concentration such diabetes insipidous and in assessing hydration status.
Specimen: Urine
Reference Values: 500-800 mOsm/l
Method:
Loinc: 2695-5
Osteocalcin
Osteocalcin is secreted solely by osteoblasts and thought to play a role in the body’s metabolic regulation and is pro-osteoblastic, or bone-building, by nature. It is also implicated in bone mineralization and calcium ion homeostasis. Osteocalcin acts as a hormone in the body, causing beta cells in the pancreas to release more insulin, and at the same time directing fat cells to release the hormone adiponectin, which increases sensitivity to insulin.
Specimen: Serum
Reference Values: <21 ng/ml
Method: CLIA
Loinc: 2697-1
Oxalate (Urine)
Oxalate is a natural end product of metabolism in the body and should be expelled through your urine. If your oxalate levels are too high, the excess oxalate can combine with calcium to form kidney stones. These stones are hard masses of chemicals that can get stuck in the urinary tract and commonly cause severe pain. Calcium-oxalate kidney stones are the most common type.
Specimen: Urine 24hrs
Reference Values: 4.0-31.0 mg/24 hours
Method:
Loinc: 57375-8