Diagnostic Center is a freestanding pulmonary and sleep medicine diagnostic facility located in Chattanooga that handles the testing side of respiratory and sleep care, operating independently from hospital systems while maintaining referral relationships with local pulmonologists and sleep specialists. It functions as the testing venue for patients whose primary-care doctors or specialists need objective measures of lung function, sleep quality, or overnight oxygen levels before diagnosis or treatment adjustment.
Diagnostic Center operates as a dedicated outpatient testing facility, not a physician's office. It houses spirometry and pulmonary function labs, sleep study beds, and the technicians and polysomnographers who run those tests, but does not employ physicians on-site. Patients arrive by referral from a pulmonologist, sleep medicine doctor, or primary-care provider; the facility runs the test, records the data, and sends results back to the ordering physician for interpretation. This separation of testing from interpretation is standard in sleep medicine, where board-certified sleep specialists typically review overnight recordings remotely and send a report within 48 to 72 hours of the study.
Diagnostic Center offers pulmonary function testing (spirometry, diffusion capacity, lung volumes), six-channel sleep screening, and full-night polysomnography. Pulmonary function tests cost between $150 and $300 out-of-pocket for uninsured patients, depending on test complexity, though most are covered at 80 to 100 percent after deductible if the patient has insurance. Home sleep apnea testing runs $400 to $600 uninsured; in-laboratory sleep studies range from $1,500 to $2,500 uninsured, but are typically billed to insurance at a negotiated rate. Confirm current pricing and any financial assistance programs when you call to schedule, as these figures shift annually.
Chattanooga Pulmonary Clinic, located downtown, integrates physician interpretation and testing on-site, which can compress your turnaround time from referral to diagnosis into one or two appointments instead of three. Erlanger's sleep lab offers in-laboratory studies but typically carries longer wait times (two to four weeks) because it is embedded in the hospital system. Diagnostic Center generally books sleep studies within 5 to 10 business days. Choose Diagnostic Center if your specialist wants results fast and does not require the physician to be on-site during the test; choose Erlanger if you need all care and follow-up under one system, particularly if you have a chronic condition already managed through Erlanger.
Diagnostic Center suits patients who have a clear referral, have already seen a pulmonologist or sleep specialist, and simply need the objective data (spirometry, overnight oximetry, or full sleep study) to support next steps. It does not suit someone looking for a first evaluation or a diagnosis, because the facility does not interpret results or prescribe treatment. It also does not suit patients who need urgent same-day testing; studies are scheduled in advance.
You will receive a referral paperwork packet via email or mail after scheduling. Arrive 10 to 15 minutes early to complete any unsigned consent forms. For pulmonary testing, you sit in a sealed booth, follow a technician's breathing cues, and complete three to eight breathing maneuvers within 15 to 20 minutes. For a sleep study, you check in around 8 p.m., meet a sleep technician who applies 15 to 20 small sensors to your scalp, chest, and legs, and sleep in a private room as the equipment records brain waves, eye movement, muscle tone, airflow, and oxygen saturation. Technicians can adjust sensor placement if you feel discomfort. Most people sleep adequately enough for a valid study; if you do not, the facility has protocols to extend the study or offer a second night.
Diagnostic Center operates Monday through Friday, 7 a.m. to 5 p.m. for daytime pulmonary testing, with evening and overnight slots reserved for sleep studies. Parking is free and adjacent to the building. Bring your insurance card, photo ID, and referral paperwork. Check-in is online when possible to speed the process. Verification note: sleep study availability and after-hours scheduling may expand; confirm when you call 423-XXX-XXXX or visit their scheduling portal.
For a Chattanooga resident with a pulmonary or sleep concern and a referral in hand, Diagnostic Center eliminates the delay of waiting for a large medical center slot and delivers results within the timeframe a specialist needs to move forward with a plan.
