Biomarkers · Chemical
1/2-hour
- LOINC codes
- 13606-9, 1506-5, 1517-2, 1526-3, 1558-6, 8251-1
- Tests that measure 1/2-hour
- Quest Diagnostics 1
Tests
Check the catalog code, specimen, method and preparation for every test that measures 1/2-hour. Select up to five tests to compare them side by side.
Quest Diagnostics 1 test
Panels that include this biomarker
Lactose Tolerance Test, 5 Specimens (50g) 7675
2 analytes · Plasma · Fasting required · Turnaround Set up: Mon-Sat; Report available: 3 days
Quest Diagnostics catalog pageMethod and collection
- Method
- Spectrophotometry (SP)
- Preparation
- Note: This cannot be performed at a patient service center because of the preparation step required for the lactol solution. Fasting required. Fasting is defined as no consumption of food or beverage other than water for at least 8 hours before testing.
- Collection
- Obtain fasting specimen. Immediately after fasting specimen is obtained, have the patient ingest a 50 g dose of lactose (obtained through client supply). Collect subsequent specimens 1/2, 1, 2, and 3 hours, labeling each sample at the time of draw with the specific draw time. LacTest Preparation instructions: If using LacTest, dissolve two 25 g packets into 6-8 oz of water to make the 50 g dose required. Mix thoroughly. Because of the relative insolubility of lactose, mix frequently during ingestion as necessary. If any lactose precipitate remains in the glass, swirl with a small amount of additional water and drink. For pediatric use, dissolve 1 gram of LacTest for every 1 kg (2.2 lbs) of the patient's body weight in 6-8 oz of water.
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Quest Diagnostics test catalog
1 test: codes, specimens, methods, preparation and reference intervals.
LOINC 13606-9, 1506-5, 1517-2, 1526-3, 1558-6, 8251-1
Regenstrief Institute codes that identify the same result across labs.
Search ClinicalTrials.gov for 1/2-hour
Registered studies that measure 1/2-hour, on the U.S. National Library of Medicine registry.
Verify these ranges and sources
We compile this page from named laboratory catalogs, guidelines and studies. Labs calculate reference intervals from the people they test, for one assay method and one population group, so an interval describes that population rather than an optimal target.
Interpret your own results with a licensed clinician, or track your lab history and health goals in Aumnivida.
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