Biceps load test

Key Takeaways

The biceps load test is a special test that assesses superior labrum anterior to posterior (SLAP) lesions by applying resistance to elbow flexion at specific shoulder positions.

Test I combines 90° shoulder abduction with external rotation to the point of apprehension. Test II combines 120° abduction with external rotation to its maximal point, and shows sensitivity of 89.7% and specificity of 96.9% for detecting SLAP pathology.

A positive result means resisted elbow flexion fails to relieve (or worsens) apprehension in Test I, or produces pain in Test II – but MRI or arthroscopy is required for definitive diagnosis, as the test alone is not diagnostic.

Practice management software like Pabau, including its digital assessment forms and clinical documentation tools, helps clinicians record biceps load test findings, imaging results, and referral decisions in a structured, compliant manner.

Shoulder pain during overhead activities, or when lying on the affected side, is a common complaint in sports medicine and orthopedic practices. Many clinicians suspect a superior labrum anterior to posterior (SLAP) lesion. But it can be hard to tell apart from other shoulder pathologies using clinical examination alone.

The biceps load test is a standardized special test that helps identify SLAP lesions through a structured protocol. It’s only one tool in a full shoulder assessment battery, though.

This guide covers the biceps load test in detail. You’ll learn what it is, how to perform both Test I and Test II, and how to interpret positive results. You’ll also see what the published diagnostic accuracy data tells us about its clinical value. It also includes a downloadable assessment form to help you record test findings in the patient record.

What is the biceps load test?

The biceps load test is a clinical special test that checks the biceps tendon and the superior labrum of the shoulder. It aims to detect superior labrum anterior to posterior (SLAP) lesions. These are tears or degenerative changes where the long head of the biceps tendon attaches to the glenoid labrum.

SLAP lesions are common in overhead athletes, throwing sports participants, and individuals with chronic shoulder impingement.

Unlike imaging studies (MRI, ultrasound) or surgical exploration (arthroscopy), the biceps load test is a bedside examination technique. It applies targeted resistance to the biceps muscle at a specific shoulder position. A positive test, indicated by increased pain or apprehension, raises suspicion of SLAP pathology.

However, a positive result requires confirmation through imaging or surgical diagnosis. It’s never diagnostic on its own.

The test exists in two versions: Biceps Load Test I (published by Kim et al., 1999) and Biceps Load Test II (published by Kim et al., 2001). Both apply the same principle of resisted elbow flexion. But they use different shoulder positions and different patient populations, which results in different diagnostic accuracy profiles.

Clinicians in sports medicine practices use the biceps load test as part of a battery of shoulder special tests. This battery includes Speed’s test, Crank test, O’Brien’s Active Compression test, and anterior slide test. Together, these tests help compare findings and build a clinical picture before ordering imaging or referral to orthopedics.

Biceps load test I vs. biceps load test II: Key differences

The two versions differ in shoulder abduction angle and the degree of external rotation. This changes the mechanical stress on the biceps tendon and labral attachment. Each test also uses a different rule for what counts as a positive result.

Kim et al. validated Test I in patients with recurrent anterior shoulder dislocation or instability. Its positive or negative call depends on whether resisted elbow flexion relieves the apprehension present in the standard apprehension-test position. That apprehension sign only exists in an unstable shoulder.

Test II was developed later for patients without anterior instability, where there’s no apprehension sign to relieve. Kim et al. built it around a pain-based criterion instead, giving the test a meaningful positive or negative rule even in a stable shoulder.

The two tests were therefore validated in different patient populations for different clinical scenarios. This wasn’t a case of one test improving on the other in the same population. Both show near-identical specificity (96.9%), meaning they’re equally good at ruling out SLAP lesions when negative – but each figure comes from its own validation population.

In clinical practice, many practitioners perform both tests in sequence to maximize diagnostic confidence. A positive result on either test warrants imaging confirmation before clinical decision-making.

How to perform the biceps load test: Step-by-step protocol

The biceps load test requires precise patient positioning and examiner technique to yield reliable results. Below is the standardized protocol for both Test I and Test II. It’s derived from the original Kim et al. publications and confirmed by clinical education references.

Biceps load test I (90° abduction)

1. Patient positioning: Patient lies supine on the examination couch. The affected shoulder is abducted to 90 degrees and externally rotated to the point of apprehension – the same starting position used for the standard apprehension test – with the elbow flexed to 90 degrees and the forearm supinated (palm facing upward).
2. Examiner hand placement: The examiner places one hand under the patient’s elbow to support the arm and maintain the abducted, externally rotated shoulder position. The examiner’s other hand grasps the patient’s wrist or distal forearm.
3. Resistance cue: Keeping the shoulder in that abducted, externally rotated position, the examiner applies a downward force (into elbow extension) and asks the patient to resist, performing an isometric contraction of the biceps against the resistance.
4. Observation: The examiner asks whether resisting the elbow flexion relieves or changes the apprehension/discomfort the patient feels in the abducted, externally rotated starting position, and notes any change in pain, apprehension, or muscle tension. The test is typically held for 5-10 seconds.
5. Result: The test is negative if resisted elbow flexion relieves the apprehension present in the starting position. The test is positive if the apprehension is unchanged or becomes worse during resisted elbow flexion.

Biceps load test II (120° abduction)

1. Patient positioning: Patient lies supine. The affected shoulder is abducted to 120 degrees (past the typical 90-degree position) and externally rotated to its maximal point, with the elbow flexed to 90 degrees and the forearm supinated.
2. Examiner hand placement: Same as Test I – one hand under the elbow to support and maintain the abducted, maximally externally rotated shoulder position, the other hand grasping the wrist or distal forearm.
3. Resistance cue: The examiner applies downward pressure into elbow extension while the patient resists, maintaining elbow flexion. Isometric contraction of the biceps is again the goal.
4. Observation: The examiner notes any pain during the resistance phase, comparing it against whatever baseline discomfort was already present in the maximally externally rotated starting position. Many clinicians palpate the biceps-labral region to detect subtle pain responses.
5. Result: The test is positive if resisted elbow flexion produces pain – either new pain or pain that is clearly greater than at baseline – particularly at the biceps-labral junction.

Both tests share the same core setup: resisted elbow flexion with the shoulder abducted and externally rotated. They’re read differently, though, so getting the external rotation and the interpretation rule right for each version matters.

Structured digital assessment forms can standardize documentation of patient positioning, movement cues, and response observations. This reduces variation in how clinicians record findings across sessions.

Interpreting the results: What a positive biceps load test means

A positive biceps load test requires careful interpretation in the clinical context. A positive result raises suspicion of SLAP pathology but is not diagnostic on its own.

Positive test criteria

• Test I (relief sign): The test is negative if resisted elbow flexion relieves the apprehension or discomfort felt in the abducted, externally rotated starting position. It is positive if that apprehension is unchanged or gets worse during resisted elbow flexion.
• Test II (pain sign): The test is positive if resisted elbow flexion produces pain – either new pain or pain that is clearly greater than the baseline discomfort in the starting position – particularly at the biceps-labral junction. Pain that localizes to the distal biceps or elbow is not a positive sign for SLAP lesions.
• Reproducibility: The response should be reproducible; repeating the test in the same session should elicit the same response. Inconsistent responses suggest non-organic or non-specific findings.

A negative test suggests a SLAP lesion is unlikely, especially when the clinical history is also low-suspicion. That means relief of the baseline apprehension during resisted elbow flexion for Test I, or no pain during resisted elbow flexion for Test II.

Clinical context still matters, though. Consider a patient with a high-suspicion presentation, such as an overhead athlete with a traumatic onset or a catching sensation. Imaging may still be warranted even if the biceps load test is negative.

Clinical significance and next steps

A positive biceps load test should prompt structured clinical documentation and referral for imaging. MRI with arthrography or arthroscopic evaluation remains the gold standard for confirming SLAP lesions. Do not rely on the special test alone for treatment decisions.

Diagnostic accuracy: Sensitivity, specificity, and clinical utility

The diagnostic accuracy of the biceps load test comes from two landmark validation studies performed by Kim and colleagues, published in the American Journal of Sports Medicine and Arthroscopy: The Journal of Arthroscopic and Related Surgery. These studies used arthroscopic confirmation as the gold standard, making their findings highly reliable.

Test I’s figures come from a population of patients with recurrent anterior shoulder instability, while Test II’s come from a separate population of patients without anterior instability. The two sets of numbers reflect different clinical scenarios rather than a single head-to-head comparison.

Sources: Kim et al., 1999, “Biceps load test: a clinical test for superior labrum anterior and posterior lesions in shoulders with recurrent anterior dislocations,” American Journal of Sports Medicine; and Kim et al., 2001, “Biceps load test II: a clinical test for SLAP lesions of the shoulder,” Arthroscopy: The Journal of Arthroscopic and Related Surgery.

These figures show a different pattern for each version. Test I has a lower PPV (83%) but a very high NPV (98%), which makes it especially useful for ruling out a SLAP lesion when the result is negative.

Test II has a high PPV (92.1%) and a high NPV (95.5%) in its own validation population. In both cases, a negative result is more useful for ruling a SLAP lesion out than a positive result is for ruling one in. Either way, a positive test still needs imaging or arthroscopic confirmation before clinical decision-making.

Biceps load test in a full shoulder special test battery

The biceps load test is rarely performed in isolation. Clinicians integrate it into a broader shoulder examination that includes other special tests to compare findings and reduce false positives.

Related SLAP special tests

These four tests are commonly grouped in pairs by what they stress: tendon loading versus joint compression.

Speed’s test and Crank test

• Speed’s Test (Biceps Tendon Test): Patient flexes the shoulder to 90° with the elbow extended and forearm supinated. The examiner resists flexion. Pain in the anterior shoulder suggests biceps tendon pathology. Often positive in both SLAP lesions and biceps tendinopathy, but less specific than the biceps load test.
• Crank Test (Compression-Rotation Test): Patient lies supine or sits with the shoulder elevated to 160° in the scapular plane and the elbow flexed to approximately 90°. The examiner applies an axial compressive load along the humerus while rotating the shoulder internally and externally, using the other hand to stabilize the scapula. A positive test – pain, a click, or apprehension – suggests labral pathology.

O’Brien’s test and the anterior slide test

• O’Brien’s Active Compression Test: Patient flexes the shoulder to 90° with 10-15° of horizontal adduction and the elbow fully extended. The examiner applies a downward force first with the shoulder maximally internally rotated (thumb pointing down), then repeats the same downward force with the shoulder externally rotated (palm facing up). Deep pain in the internally rotated position that lessens or resolves in external rotation is positive for labral pathology; pain that stays superficial, at the top of the shoulder, in both positions instead suggests AC joint pathology.
• Anterior Slide Test: Patient stands or sits with hands on hips and thumbs pointing posteriorly. The examiner stabilizes the scapula from above with one hand and, with the other hand positioned behind the elbow, applies an anterior-and-superior force along the humerus toward the glenoid. Pain and/or a pop or click at the front of the shoulder is a positive result, suggesting anterior labral pathology.

Clinicians using complete electronic patient records with integrated assessment templates can document results across multiple special tests in a single session. This creates a full clinical picture that guides imaging decisions and treatment planning.

Streamline your shoulder assessment documentation

Clinicians lose time manually recording special test findings across different forms. Pabau's structured assessment templates and AI-powered documentation help you complete the biceps load test protocol and build clinical notes in seconds, so you can focus on patient care.

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Clinical documentation checklist for the biceps load test

Recording the biceps load test findings in the patient record requires capturing several key data points. Below is a practical checklist to keep your records consistent across all patients and support clinical governance and continuity of care.

Pre-test setup

• ☐ Patient informed of test purpose and that discomfort may occur
• ☐ Affected shoulder identified and side verified
• ☐ Patient positioned supine on examination couch
• ☐ Shoulder abduction angle (90° for Test I or 120° for Test II) confirmed visually or with goniometer
• ☐ Shoulder externally rotated – to the point of apprehension for Test I, or to its maximal point for Test II – and this position confirmed before resistance is applied

Test execution

• ☐ Elbow flexion at 90 degrees confirmed
• ☐ Forearm supinated (palm facing upward)
• ☐ Shoulder external rotation maintained throughout the resistance phase
• ☐ Examiner hand placement secured under elbow and at wrist
• ☐ Resistance applied in controlled manner (no sudden force)
• ☐ Test duration noted (typically 5-10 seconds)
• ☐ For Test I, whether resistance relieved or worsened baseline apprehension noted; for Test II, whether resistance produced pain noted
• ☐ Test repeated to confirm reproducibility of response

Test findings

• ☐ Patient response documented: pain present / absent; apprehension present / absent; clicking or instability present / absent
• ☐ Pain location identified (shoulder region, biceps-labral junction, distal biceps, or other)
• ☐ Pain intensity (on 0-10 numerical scale if using pain rating)
• ☐ Test result: positive / negative / equivocal
• ☐ Related special tests documented (Speed’s, Crank, O’Brien’s, anterior slide) with findings

Clinical decision-making

• ☐ Clinical impression based on cluster of findings (single test result not diagnostic)
• ☐ Imaging recommendation documented (MRI, ultrasound, or none based on clinical judgement)
• ☐ Referral to orthopedic surgeon documented if indicated
• ☐ Patient education provided regarding next steps and expected timeline
• ☐ Advice documented (activity modification, physiotherapy focus, imaging timeline)

Using AI-powered clinical documentation tools can accelerate the note-writing process after the examination is complete. Clinicians can verbally summarize their findings. The AI then generates a structured note that fills in the checklist items above, cutting paperwork and keeping your format consistent.

Conclusion: Making the biceps load test part of your shoulder assessment

The biceps load test is a high-value special test for identifying SLAP lesions in patients with shoulder pain and overhead demands. With sensitivity and specificity exceeding 89%, it deserves a place in every clinician’s shoulder examination toolkit.

Test I and Test II were validated in different patient populations, rather than one replacing the other. Many practitioners perform both: Test I when anterior instability is present, and Test II when it isn’t.

The key takeaway is that a positive result warrants imaging confirmation before clinical decision-making. The test alone is never diagnostic. But the biceps load test works best as part of a full shoulder examination battery. Alongside Speed’s test, Crank test, O’Brien’s test, and anterior slide test, it adds critical information that guides referrals, imaging selection, and treatment planning.

To standardize your records, book a demo of Pabau’s digital assessment forms and AI-powered charting tools. They’re built for physiotherapists, sports medicine practitioners, and orthopedic clinicians. Use them to document special test findings, imaging results, and clinical decisions in one structured system.

Continue your research

Want to round out your special test battery beyond the shoulder? Upper limb tension tests screen for neural tension contributing to arm and shoulder symptoms, a useful differential when biceps load test findings are equivocal.

Need a broader documentation template to sit alongside your special test findings? Clinical evaluation template gives clinicians a structured format for recording history, exam findings, and assessment across any specialty.

Comparing practice software beyond special test documentation? Clinic management software options outline how sports medicine and physical therapy practices run scheduling, billing, and records in one system.

Frequently asked questions about the biceps load test