HL7v2.Profiles.IHE.LTW (HL7v2 v3.10.1)

IHE Laboratory Testing Workflow (LTW) conformance profiles.

Ships factory functions for the two most common IHE PaLM TF laboratory transactions:

LAB-1 Placer Order Management — OML^O21 placer → filler. Source: IHE PaLM TF-2a §3.1 (Rev 11.0, 2024-04-08).
LAB-3 Order Results Management — ORU^R01 filler → results tracker. Source: IHE PaLM TF-2a §3.3.

Both transactions are defined on HL7 v2.5.1. The IHE PaLM TF constrains several base-HL7 fields to X (not supported) in favor of newer segments — notably ORC-7 and OBR-5/6/8/27 are replaced by TQ1.

Usage

profile = HL7v2.Profiles.IHE.LTW.lab_1_placer_oml_o21()
HL7v2.validate(msg, profile: profile)

Summary

Functions

all()

Returns the complete LTW profile catalog.

lab_1_placer_oml_o21()

LAB-1 OML^O21 — Placer Order Management.

lab_3_results_oru_r01()

LAB-3 ORU^R01 — Order Results Management.

Functions

all()

@spec all() :: %{required(String.t()) => HL7v2.Profile.t()}

Returns the complete LTW profile catalog.

lab_1_placer_oml_o21()

@spec lab_1_placer_oml_o21() :: HL7v2.Profile.t()

LAB-1 OML^O21 — Placer Order Management.

Placer → Filler new-order flow. Requires MSH, PID, ORC, OBR. PV1-2 is required (value "U" when patient class is unknown). ORC-1 must be a valid IHE subset code; ORC-9 carries the transaction timestamp; OBR-2/OBR-4/OBR-16 are all required.

Forbidden fields (per IHE PaLM TF-2a §3.1.4.1.2.3):

ORC-7 (Quantity/Timing) — replaced by TQ1
OBR-5 (Priority) — replaced by TQ1
OBR-6 (Requested Date/Time) — replaced by TQ1
OBR-8 (Observation End Date/Time) — replaced by SPM
OBR-15 (Specimen Source) — replaced by SPM
OBR-22 (Results Rpt/Status Chng) — not supported in LAB-1
OBR-27 (Quantity/Timing) — replaced by TQ1

Source: IHE PaLM TF-2a §3.1.

lab_3_results_oru_r01()

@spec lab_3_results_oru_r01() :: HL7v2.Profile.t()

LAB-3 ORU^R01 — Order Results Management.

Filler → Results Tracker results delivery. Requires MSH, PID, ORC, OBR, OBX. OBR-3 (Filler Order Number) is the primary correlation key; OBR-4 must carry Identifier + Text + Coding System subcomponents. OBR-25 (Order Result Status) is required and must be one of {S, I, R, P, F, C, X}. OBX-11 (Observation Result Status) is required and must be one of {O, I, D, R, P, F, C, X} — note U is explicitly forbidden.

Source: IHE PaLM TF-2a §3.3.