Lean Lab

Weight Loss Clinic in Pasadena, California

Call (626) 901-5326238 S Arroyo Pkwy, Pasadena, CA 91105

5 (17 reviews)

About Lean Lab

Lean Lab in Pasadena brings together medical weight loss, body contouring, and medical spa services under one roof. It's built for people who want real results and don't want to split their care across three different providers. The clinic has earned a perfect rating because the staff genuinely pays attention and follows through.

The approach here is modern and aesthetic-focused without being superficial. Patients come in for fat loss and often stay for the complementary treatments that help their results show. The team is skilled at combining clinical programs with non-invasive body shaping in ways that make sense for each person's goals, not just as a sales bundle.

Services Offered

Lean Lab offers a full weight loss program that starts with a medical intake and can include GLP-1 medications, dietary guidance, and ongoing monitoring. The clinical side is thorough and the staff stays engaged throughout the process rather than checking in only at scheduled visits. The medical spa services here are genuinely integrated with the weight loss program. Body contouring treatments like cryolipolysis and radiofrequency skin tightening are used to complement fat loss and improve how results look, particularly for patients who are losing significant amounts of weight. The clinic also offers IV drips, facial treatments, and skin rejuvenation services for patients looking for a more comprehensive approach to looking and feeling better. All treatment plans are developed with the individual in mind. There's no one-size-fits-all package. Patients receive a consultation that covers their goals, budget, and timeline before any services are recommended.

Weight Loss Centers

Medical Spas

Body Contouring

Treatment Options

Medical Weight Loss with GLP-1 Therapy

A physician-managed program using GLP-1 receptor agonists alongside dietary guidance and regular monitoring to drive meaningful fat loss over a defined program period.

3 to 6 months$200 to $500/month depending on medication

Body Contouring (Cryolipolysis)

Non-invasive fat reduction using controlled cooling to eliminate fat cells in targeted areas like the abdomen, flanks, or thighs without surgery or downtime.

1 to 3 sessions per area$600 to $1,200 per session

Radiofrequency Skin Tightening

Energy-based treatment that stimulates collagen and tightens loose skin, often used after significant weight loss to improve overall body contour and skin texture.

4 to 6 sessions$300 to $700 per session

IV Nutrient Therapy

Customized intravenous drips delivering vitamins, minerals, and hydration directly into the bloodstream to support energy, recovery, and overall wellness during a weight loss program.

45 to 60 minutes per session$150 to $300 per session

What to Expect

New patients start with a consultation that covers their weight history, current health status, and aesthetic goals. This is a real conversation, not a quick intake form. The team wants to understand what you're hoping to achieve and what's gotten in the way before.

Based on that consultation, a treatment plan is built that may combine a medical weight loss program with one or more body contouring sessions. The two timelines are coordinated so that contouring treatments happen at points in the weight loss process where they'll have the most impact.

Follow-up appointments are scheduled consistently, and the team checks in between visits if anything comes up. Most patients move through an active phase of three to four months before transitioning to maintenance. The clinic is transparent about what results are realistic and at what stage of the process you'll likely see them.

Why Choose Lean Lab

The combination of medical weight loss and body contouring in one place is the most obvious reason to choose Lean Lab. You don't have to coordinate between a weight loss doctor and a separate med spa. The team here already knows how to integrate both sides of your treatment.

The perfect rating tells you something real about this clinic. A five-star average across a meaningful number of reviews means the staff consistently delivers on what they promise. That kind of consistency doesn't happen by accident.

The clinic's approach to GLP-1 medications is also worth noting. They're not just prescribing and moving on. They're managing side effects, adjusting doses, and pairing medications with behavioral changes that make results stick. That's the difference between a short-term result and something that lasts.

Insurance & Pricing

Weight loss and body contouring services at Lean Lab are generally not covered by insurance, though initial medical consultations and lab work may be partially billable depending on your plan. GLP-1 medications may have insurance coverage if you have a qualifying diagnosis, and the staff can assist with prior authorization paperwork.

Pricing is transparent and discussed during the initial consultation. Packages that combine weight loss programs with contouring sessions are available and typically more cost-effective than booking services individually. Financing is available through third-party providers.

First-Time Patient Tips

Be clear about your goals when you come in for your first visit. If you want to lose weight and also address specific areas like your abdomen or arms, say so upfront. The team will build a plan that addresses both rather than treating them as separate conversations.

Ask about the timing of body contouring treatments within your weight loss program. Some treatments are more effective at certain stages, and the staff here can explain when it makes sense to start contouring versus waiting until you've lost a certain amount.

Stay consistent with follow-ups. The clinic's approach depends on regular check-ins to keep things on track. Patients who skip appointments tend to plateau longer and see slower results. The whole system is built around staying engaged, so use it.

Pros & Cons

Advantages

The clinic uniquely combines medical weight loss and body contouring, so patients don't need to visit multiple providers for complementary treatments.
Lean Lab has a perfect five-star rating, reflecting consistent quality and strong patient outcomes across services.
The team is experienced with GLP-1 medications and actively manages dosing, side effects, and lifestyle integration rather than just prescribing and stepping back.

Things to Consider

Services are priced at a premium, and combining weight loss and contouring treatments can add up to a significant total investment.
The clinic's specialized focus means it may not be the right fit for patients who only want basic dietary coaching without aesthetic services.

Service Area

Lean Lab serves patients primarily from Pasadena and nearby areas including Arcadia, Monrovia, San Marino, Sierra Madre, and Alhambra. The clinic is accessible from the 210 freeway, making it easy to reach from the broader San Gabriel Valley. Patients from downtown Los Angeles and the Eastside also visit, particularly for body contouring services that aren't as widely available at general weight loss clinics.

Local Insight

Pasadena has a health-conscious population with high expectations for both clinical quality and patient experience. Lean Lab fits that market well. The city's mix of professionals, academics, and families means the clinic sees a wide range of patients with different goals and schedules. Proximity to Caltech and the local hospital system also means the patient base tends to ask informed questions, which the Lean Lab team is well-equipped to answer.

Frequently Asked Questions

Do I have to do body contouring if I sign up for the weight loss program?

No. The weight loss program stands on its own and contouring is always optional. Many patients focus on weight loss first and add contouring later once they've hit certain milestones.

What GLP-1 medications does Lean Lab prescribe?

The clinic prescribes based on what's clinically appropriate for each patient. During your consultation, the physician will review your health history and discuss which options are the best fit for your goals and situation.

How many body contouring sessions will I need?

It depends on the treatment area, your starting point, and the specific device being used. Most patients see meaningful results with one to three sessions per area, but the team will give you a realistic estimate during your consultation.

Is cryolipolysis painful?

Most patients experience intense cold and some pressure during the treatment, but it's generally well-tolerated without anesthesia. Mild soreness and temporary numbness in the treated area are common after the session.

Can I do IV therapy if I'm not doing a weight loss program?

Yes. IV therapy is available as a standalone service. It's popular with patients looking for energy support, hydration after illness, or general wellness maintenance.

How long before I see results from the weight loss program?

Most patients see noticeable changes within four to six weeks when following their plan consistently. The pace varies based on your starting point, the medications used, and how closely you stick to the dietary guidelines.

What happens after I reach my goal weight?

The clinic offers a maintenance phase designed to help you hold your results. This typically involves less frequent check-ins and a modified plan focused on sustaining your weight rather than continuing to lose.

Is Lean Lab right for me if I only have 15 to 20 pounds to lose?

Yes. The clinic works with patients across a wide range of goals. Smaller fat loss goals can often be combined with contouring to get both leaner and more defined, which many patients find very motivating.