Phenylalanine/Tyrosine [Molar ratio] in DBS --post therapeutic diet 74300-5
LOINC Code
| LOINC code | 74300-5 | ||
|---|---|---|---|
| name | Phenylalanine/Tyrosine [Molar ratio] in DBS --post therapeutic diet | ||
| description | This test measures the phenylalanine to tyrosine ratio in children who have been diagnosed with phenylketonuria and are on a therapeutic diet for their condition. The parent of the patient collects the dried blood spot specimen at home and sends it to the laboratory. This ratio is used together with the phenylalanine and tyrosine levels to monitor the patient's progress. Note: different locations use different monitoring analytes. In some states, tyrosine and phenylalanine levels are used in conjunction with the succinylacetone level instead of the phenylalanine to tyrosine ratio. | ||
| status | ACTIVE | ||
Fully-Specified Name | |||
| component | Phenylalanine/Tyrosine^post therapeutic diet | ||
| property | SRto = Substance Ratio | ||
| time | Pt = Point in time: To identify measures at a point in time. This is a synonym for “spot” or “random” as applied to urine measurements. | ||
| system | Bld.dot = Blood filter paper | ||
| scale | Qn = Quantitative: The result of the test is a numeric value that relates to a continuous numeric scale. Reported either as an integer, a ratio, a real number, or a range. The test result value may optionally contain a relational operator from the set {<=, <, >, >=}. Valid values for a quantitative test are of the form "7", "-7", "7.4", "-7.4", "7.8912", "0.125", "<10", "<10.15", ">12000", 1-10, 1:256 | ||
| method | |||
Additional Names | |||
| short name | Phe/Tyr p diet DBS-sRto | ||
Basic Attributes | |||
| class | CHAL | ||
| type | 1 Laboratory | ||
| order vs. observation | Both | ||
| example UCUM units | {ratio} The Unified Code for Units of Measure (UCUM) is a code system intended to include all units of measures being contemporarily used in international science, engineering, and business (www.unitsofmeasure.org) | ||
| example unit | ratio | ||
Associated Observations | |||
LOINC codes that represent optional associated observation(s) for a clinical observation or laboratory test. A LOINC term may represent a single associated observation or panel containing several associated observations. | |||
Member of these Panels | |||
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History/Usage | |||
| first released | |||
| last updated | 2.61 | ||
| last change type | MIN - change to field other than name | ||
Related Names | |||
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