Dysphagia Knowledge Hub — 吞嚥困難知識庫
IDDSI Spoon Tilt Test
Overview
The IDDSI Spoon Tilt Test is one of several simple, practical tests developed by the International Dysphagia Diet Standardisation Initiative (IDDSI) to verify that food and fluid textures match their intended IDDSI level. It is particularly useful for:
- IDDSI Level 4 — Pureed: Smooth, moist, cohesive foods that flow slowly
- IDDSI Level 3 — Liquidised: Foods that have been processed to a fluid consistency and flow easily
The test uses only a standard spoon and takes seconds to perform, making it suitable for kitchen quality control, nursing assessment at bedside, and caregiver education at home.
Equipment
- Standard dessert spoon or tablespoon
- Sample of food (1 spoonful)
- Optional: plate or bowl to catch the sample
Performing the Spoon Tilt Test
Step 1: Load a level spoonful of the food or fluid.
Step 2: Tilt the spoon to approximately 45°, then continue to 90° (fully inverted).
Step 3: Observe how the food or fluid moves.
IDDSI Level 4 — Pureed: Pass Criteria
The food should:
- Slide off the spoon with a gentle movement when tilted to 45°
- Fall in a slow, cohesive mass
- Not drip off rapidly like a liquid
- Not stick to the spoon so firmly that it requires scraping
Fail — Too thick: Food sticks to the spoon and requires scraping or tapping. Food piles on itself when it falls rather than flowing.
Fail — Too thin: Food pours off the spoon rapidly, flows like a liquid, and spreads widely.
IDDSI Level 3 — Liquidised: Pass Criteria
The food should:
- Pour off the spoon fairly quickly when tilted
- Flow without separation into solid and liquid components
- Leave only a thin coating on the spoon
Fail — Too thick: Food slides off slowly like Level 4 Pureed. Fail — Separation: Food separates into visible solid and liquid components on the spoon.
Spoon Tilt vs. Fork Drip: When to Use Each
| Test | Best for | IDDSI Levels |
|---|---|---|
| Fork Drip | Pureed and Minced | Levels 4 and 5 |
| Spoon Tilt | Pureed and Liquidised | Levels 3 and 4 |
| Flow Test (syringe) | Liquids | Levels 0–2 |
For Level 4 (Pureed), both Fork Drip and Spoon Tilt are applicable and complementary. Using both increases confidence in the classification.
Clinical Applications
Kitchen quality control: Spoon Tilt Test takes 10 seconds per sample. Kitchen staff can use it as a daily check on blended foods before service.
Bedside nursing use: When a patient’s texture changes (e.g., post-speech therapy review), nursing staff can perform a Spoon Tilt Test on the new texture before feeding to confirm it matches the prescription.
Caregiver training: The Spoon Tilt Test is easier to demonstrate than the Fork Drip Test for caregivers with limited technical experience, especially for blended home-cooked foods.
Documentation: Always record which test was used, the result, and the temperature of the food tested.
Important Notes
- Temperature matters: Test food at serving temperature. Many pureed foods become stiffer when cold and thinner when hot.
- Fat content: High-fat foods may appear to pass at serving temperature but separate when cooled (e.g., avocado-based purée). Test the full meal service process.
- Not a substitute for clinical assessment: Passing the Spoon Tilt Test confirms texture compliance; it does not confirm that the texture is safe for a specific patient. That decision rests with the speech-language therapist.
References
- IDDSI Framework (2019). Testing Methods. International Dysphagia Diet Standardisation Initiative. https://iddsi.org/Testing-Methods
- Cichero JA, et al. (2017). Development of international terminology and definitions for texture-modified foods and thickened fluids used in dysphagia management. Dysphagia, 32(2):293–314. DOI: 10.1007/s00455-016-9758-y
- Steele CM, et al. (2015). The international dysphagia diet standardisation initiative framework. Dysphagia, 30(6):692–703. DOI: 10.1007/s00455-015-9634-8