LOINC Home

{component}   LP432695-7

Laboratory   LP29693-6

Chemistry and Chemistry - challenge   LP343631-0

Chemistry - non-challenge   LP7786-9

Amino acids   LP18033-8

Tryptophan   LP15931-6

LOINC Hierarchy


Select the title to see children of the section (▸) or the LOINC code. Select a code to view information about the section/code.

▸ Indole   LP15664-3

▸ Tryptophan | Amniotic fluid | Chemistry - non-challenge   LP384390-3

▸ Tryptophan | DBS | Chemistry - non-challenge   LP384391-1

▸ 3-Hydroxykynurenin   LP173725-5

▸ Kynurenin   LP70439-2

▸ Tryptophan | Body fluid | Chemistry - non-challenge   LP384392-9

▸ Tryptophan | Cerebrospinal Fluid | Chemistry - non-challenge   LP384393-7

▸ Tryptophan Free   LP29129-1

▸ Folate and tryptophan and metabolites pattern   LP201743-4

▸ Tryptophan | Platelet rich plasma | Chemistry - non-challenge   LP384394-5

▸ Tryptophan | Serum | Chemistry - non-challenge   LP384395-2

▸ Tryptophan/Creatinine   LP287314-1

▸ Tryptophan | Serum or Plasma | Chemistry - non-challenge   LP384396-0

▸ Tryptophan | Urine | Chemistry - non-challenge   LP384397-8


Copyright © 2026 Regenstrief Institute, Inc. All Rights Reserved. To the extent included herein, the LOINC table and LOINC codes are copyright © 1995-2026, Regenstrief Institute, Inc. and the Logical Observation Identifiers Names and Codes (LOINC) Committee. See https://loinc.org/license for the full LOINC copyright and license.

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