Testing and Exams

Cardiopulmonary, Laboratory, Radiology

Cardiopulmonary Testing, Laboratory & Radiology Services

Whether you need a CT scan, a mammogram or lab services, we’ve got you covered up here at Mountains Community Hospital (MCH) in Lake Arrowhead. There’s no need to drive down the mountain when you need diagnostic testing – MCH provides you with accurate results quickly with your convenience in mind. Our experienced team delivers compassionate care in our technologically advanced laboratories to patients of all ages as an inpatient or outpatient. Our diagnostic services include:

Cardiopulmonary Testing & Treatments

The Cardiopulmonary Department provides 24/7 care for patients in the Emergency Room, Medical/Surgical Department and Skilled Nursing Facility.

Diagnostic Tests:

  • Electrocardiogram (ECG or EKG)
  • Pulmonary Function Test
  • Arterial Blood Gas
  • Treadmill Stress Test
  • Holter Monitor


  • Nebulizer therapy
  • Ventilator therapy
  • BiPAP therapy
  • Respiratory education on respiratory disease treatment

Outpatient testing and treatments are available 7 days a week from 7:00 am – 7:00 pm.

For questions on cardiopulmonary testing and treatments, please call 909-436-3150 or complete this FORM by selecting “Diagnostic – Cardiopulmonary” in the drop down.


If you are in need of lab testing, our skilled and highly educated pathologists, clinical lab scientists and phlebotomists are here for you 24/7. Our state-of-the-art equipment includes the BioFire® FilmArray® system, which allows for high speed, simultaneous detection of viruses, bacteria, yeast, parasites and antimicrobial resistance genes. FilmArray test results will be confirmed in about an hour.

Lab testing includes:

  • Hematology

  • Immunohematology

  • Serology

  • Phlebotomy

  • Chemistry

  • Urinalysis

  • Urine Drug Screening

  • Microbiology

Inpatient testing is 24 hours a day, seven days a week.


Outpatient testing is available Monday through Friday, from 8:00 am – 4:30 pm.

To learn more, call 909-436-3140 or complete this FORM by selecting “Diagnostic – Laboratory” in the drop down.



We are pleased to offer pre-registration to help make your hospital admission as smooth as possible. Pre-registration is available to all scheduled patients ahead of the date of service.

It only takes a few minutes to register over the phone. When pre-registered patients arrive at the hospital for their appointment, they check-in at the MCH Front Office with their photo ID and health insurance card(s).

Pre-register by phone, or in person, at least 2 business days in advance of your appointment.

Monday through Friday, 8 am – 4:30 pm.

Contact Us:
MCH Front Office / Pre-registration
Phone: (909) 436-3002

Radiology Department

Accurate, convenient and fast diagnostic imaging is the starting point in diagnosing a range of medical conditions. Mountain Community Hospital diagnostic imaging offers innovative imaging options in a comfortable outpatient setting.

Our Radiology Department has the cutting-edge technology that has made our imaging services comparable to those offered at major hospitals around the country.

Diagnostic imaging services include, but are not limited to:

  • New CT Toshiba Aquilion Prime 80 CT scanner

  • New Toshiba Aplio 300 Ultrasound machine

  • Digital Radiography (X-ray)

  • Digital Fluoroscopy (Orthopedic cases)

  • Ultrasound

  • Digital Mammography (Screening and diagnostic)

  • Bone Density (DEXA scanning)

Outpatient testing is available Monday through Friday, from 8 am – 4:30 pm.

To learn more or schedule an appointment, call 909-436-3130 or complete this FORM by selecting “Diagnostic – Radiology” in the drop down.