2780 Skypark Drive, TorranceGet directions Call (310) 326-2161
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Diagnostic testing

Allergy and bone density testing in Torrance

Targeted tests can answer specific questions: what’s behind your allergy symptoms, how strong your bones are, or why your hands or feet tingle. Dr. Shin matches each test to your symptoms and history.

Who it’s for
Adults with allergy symptoms, a higher risk of bone loss, or numbness and tingling
Visit length
Varies by test — ask when booking
Before allergy tests
Ask which medicines to pause, such as antihistamines — don’t stop any on your own
Insurance
Most tests billed to insurance — call to confirm your plan

Allergy testing

Allergy tests are most helpful when they match your symptoms and history, such as sneezing every spring or hives after eating a certain food. There are two main types:

  • Blood tests measure IgE, the antibody involved in allergic reactions, to specific allergens. They can be a good choice if you can’t pause certain medicines, have a skin condition, or are likely to have a serious reaction to skin testing.
  • Skin tests place tiny amounts of allergens on or just under the skin and watch for a small raised bump. The most common side effect is red, itchy skin where the test was done.

A positive result doesn’t always mean you have a true allergy, so Dr. Shin reads results alongside your symptoms. Food “sensitivity” panels that measure IgG are not recommended for diagnosing allergies, according to the American Academy of Allergy, Asthma and Immunology.

Bone density screening

Osteoporosis thins the bones and raises the risk of breaks. It usually causes no symptoms, and many people don’t know they have it until a bone breaks. The USPSTF recommends osteoporosis screening for women 65 and older and for postmenopausal women younger than 65 who are at increased risk; it found too little evidence to assess screening in men (2025).

The main test is a DXA scan, a low-dose X-ray that usually takes 10 to 30 minutes. Smaller devices that measure bone in the finger, forearm or foot give less detail, so a DXA scan may be advised if results or risk factors call for it. We’ll explain which test fits you and where it’s done. You may be asked to stop calcium supplements 24 to 48 hours before a scan.

Numbness, tingling and weakness

Numbness or tingling in the hands or feet has many possible causes, including pressure on a nerve (such as carpal tunnel syndrome), diabetes, low B vitamin levels and some medicines. Dr. Shin starts with your history and an exam of your nerves at our Torrance office, and may order blood tests such as blood sugar, thyroid function and vitamin B12.

We evaluate numbness, tingling and weakness, and if you need nerve conduction studies or electromyography (EMG), we refer you to a neurology or physical medicine specialist for that testing.

How testing works

  1. Evaluation

    Dr. Shin reviews your symptoms, history and medicines to choose a test, or to decide that no test is needed.

  2. Preparation

    We tell you what to pause or avoid, such as some allergy medicines or calcium supplements.

  3. Testing

    Your test is done in our office or at an outside lab or imaging center, depending on the test.

  4. Plan

    Dr. Shin explains your results and next steps, including a specialist referral when needed.

Common questions

Should I get an allergy blood test or a skin test?

Neither is right for everyone. Skin prick tests show results in about 15 to 20 minutes, while blood tests help when you can’t pause certain medicines, have a skin condition or might have a serious reaction. Sometimes both are used. Dr. Shin will explain which test is appropriate for you and where it’s done.

Can you test for food sensitivities?

Blood panels that measure IgG to dozens of foods are widely available, but they haven’t been shown to diagnose food allergies or sensitivities, and the American Academy of Allergy, Asthma and Immunology recommends against using them. If you have symptoms after eating, Dr. Shin can talk with you about next steps, including referral to an allergist.

Who should get a bone density test?

The USPSTF recommends osteoporosis screening for women 65 and older and for younger postmenopausal women at increased risk (2025). Risk factors can include very low body weight, a broken bone after age 50, a family history of osteoporosis, and long-term tobacco or alcohol use. Others should ask Dr. Shin whether testing makes sense for them.

Do I need to stop allergy medicine before testing?

Often, yes. Antihistamines and some other medicines can affect allergy test results, especially skin tests. We’ll tell you which medicines to pause and for how long. Never stop a prescription medicine unless we tell you to, and tell us about everything you take.

What causes tingling in the hands and feet?

Common causes include pressure on a nerve, such as carpal tunnel syndrome, as well as diabetes, low B vitamin levels and some medicines. Sometimes it signals a more serious problem. See Dr. Shin if tingling has no clear cause, and get emergency care if it comes with sudden weakness or trouble speaking.

Important information

  • Some tests need preparation, such as pausing certain allergy medicines. Please call (310) 326-2161 to confirm a test is available and how to prepare.
  • Call 911 for a severe allergic reaction with trouble breathing or swelling, or if numbness comes with sudden weakness, slurred speech, vision changes or trouble walking.

Sources & further reading

  1. Osteoporosis to Prevent Fractures: Screening (2025) (opens in a new tab) — U.S. Preventive Services Task Force
  2. Bone Density Scan (opens in a new tab) — MedlinePlus, U.S. National Library of Medicine
  3. Allergy Blood Test (opens in a new tab) — MedlinePlus, U.S. National Library of Medicine
  4. Allergy Skin Test (opens in a new tab) — MedlinePlus, U.S. National Library of Medicine
  5. The Myth of IgG Food Panel Testing (opens in a new tab) — American Academy of Allergy, Asthma & Immunology
  6. Numbness and tingling (opens in a new tab) — MedlinePlus, U.S. National Library of Medicine
  7. Electromyography (EMG) and Nerve Conduction Studies (opens in a new tab) — MedlinePlus, U.S. National Library of Medicine

Last updated October 2026. This page is educational and does not replace a visit with a clinician.

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