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Orthostatic heart rate increment across conditions

Orthostatic heart rate increment appears in 3 entries of the OSMF biomarker atlas, covering Gulf War Illness, ME/CFS, PACVS. Across those entries it is elevated in 3. Because the same marker shifts in several unrelated conditions, it is best understood as a signal of shared biology such as inflammation, vascular or metabolic stress rather than as a condition-specific test. Each row below links to a page with the comparison group, associated symptoms, test details and primary citation.

Gulf War IllnessME/CFSPACVS

Where Orthostatic heart rate increment is reported

Also listed as: Tilt table / stand test; Tilt/stand test

ConditionDirectionCompared againstAssociated symptomsSource
Gulf War Illness↑ elevatedhealthy Gulf War veteran controlsPOTS-like phenotypeGean et al. 2021
ME/CFS↑ elevatedhealthy controlsPOTS, orthostatic intoleranceNelson et al. 2019
PACVS↑ elevatedhealthy controlsPOTS, orthostatic intoleranceMundorf et al. 2024

Frequently asked questions

In which conditions is Orthostatic heart rate increment altered?

In the OSMF atlas Orthostatic heart rate increment is reported in Gulf War Illness, ME/CFS, PACVS. It is elevated in 3 across 3 entries.

Does Orthostatic heart rate increment point to one specific diagnosis?

No. Because Orthostatic heart rate increment changes in several conditions (Gulf War Illness, ME/CFS, PACVS), an abnormal result cannot identify which condition, if any, is present. It must be interpreted with symptoms, history and other tests.

Is there a standard clinical test for Orthostatic heart rate increment?

The atlas entries for Orthostatic heart rate increment do not carry a LOINC code, which usually means the marker was measured with research assays or study-specific methods rather than a routine clinical panel.

Is one abnormal Orthostatic heart rate increment result diagnostic?

No single biomarker result is diagnostic of any of these conditions. Findings reflect group averages from published cohorts with substantial overlap between patients and controls.

Cite this page

Open Source Medicine Foundation. (2026). Orthostatic heart rate increment across conditions: biomarker evidence. OSMF Research Tracker. Retrieved October 7, 2026, from https://research.opensourcemed.info/biomarkers/markers/orthostatic-heart-rate-increment.html
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Last reviewed: 2026-06-30 · Browse: Biomarker Index · All marker pages · Biomarker Atlas

Disclaimer: Educational synthesis of peer-reviewed research; not medical advice. Findings are group-level and vary with study design. Discuss any result with a qualified clinician.