Referral: A Problematic Approach to Allergy
Clinic takeover, i.e. the third-party staffing model of allergy testing in primary care, has a serious rival for the least favorable alternative to self-managed point-of-care allergy testing: referring it out to a lab or, worse yet, to an allergist. The reasons are both medical and financial. In fact, one could argue referral isn’t even logical.
Medical Detriments of Referral
First and foremost, a default to referral strongly implies a failure to detect the vast majority of allergic patients. Referral in this context strongly implies that one of two situations has occurred: either A) the patient asked for an allergy test, or B) the provider observed problematic, potentially allergic symptoms. In either case, the referral shows the clinic is unequipped to do the indicated allergy test. There is a deeper, far more important implication, though: the attempt to address allergy occurred only because allergy was already suspected. Most allergic patients get missed.
Potentially allergic patients get missed because the vast majority of patients who need testing are not identified by observation and do not self-identify either. Instead they’re detected by routine screening with a symptom survey either upon initial intake as medical history, or when they repeat that survey annually because allergies develop over time. With a third to a half of every clinic’s patient population being allergic, all clinics should be doing such screening. Those that don’t, such as those who refer patients out for testing, are missing a crucial opportunity to help a huge percentage of their patients. A more practical alternative is point-of-care allergy testing in primary care, which keeps the diagnostic step inside the clinic’s own workflow.
The medical detriment to the patient can compound if referral results in a positive allergy diagnosis and subsequent treatment, because by implication, that treatment, too, is outside the primary care context. At the risk of stating the obvious, referral means added difficulty for the primary care provider in staying abreast of the impact of allergy on that patient’s other symptoms, conditions, and overall health. Especially in light of the fact that many symptoms of allergy are very often not identified as indicative of allergy, rather than some other condition, separating care in this manner can needlessly erode patient experience.
The Illogic of Lab Referral
With lab testing for allergy, another headscratcher arises from the next step, or lack of one. Except in cases where such testing is defensive, for the purpose of ruling out allergy, the test either indicates the provider has missed a lot of other patients who need it, or it becomes a redundant dead end for that clinic. That is, if the patient’s IgE lab results indicate allergies to oak, mold, and cats, what then? It’s certainly not likely that a practice that orders a lab test for allergy will have the wherewithal to treat allergies thus diagnosed. So an allergist referral is in the offing anyway, and that allergist is most likely to repeat the test, or want to. Most payors won’t cover more than one allergy test in a plan year, though, so that repeat could either cost the patient a lot of money or needlessly delay the allergist’s efforts altogether. Thus, in most cases, taking a blood sample and sending it out for IgE allergy testing, or sending the patient to the lab, becomes a little illogical. Referral directly to an allergist can make more sense, but of course that comes with potential delays given the shortage of practicing allergists, may require pre-authorization, and other hassles. Many of these objections clinics still carry are rooted in outdated service models and old assumptions. We cover those false barriers in more detail in why primary care sees allergy everywhere but rarely tests for it.
Compound Financial Impact of Referral
Undoubtedly, specialist referrals are necessary sometimes. A primary care provider who suspects cancer in a patient, for instance, would be remiss, to put it mildly, not to refer that patient to a specialist. Especially where referral is not necessary, however, it’s important to recognize the compound cost of it: the substantial financial impact of inviting your patient to leave.
Inviting Your Patient to Leave
It’s obvious that referring a patient out costs the original clinic the reimbursement for the test itself, and any resulting treatment. That’s a lot of money—more on that in a bit. What’s not obvious sometimes is that by referring your patients out, you’re inviting them not to come back. One of the Immutable Laws of Marketing that it’s better to be first in the mind than first in the marketplace. Applied to a primary care practice, the most profoundly valuable asset is the patient mindset: “my doctor.” That mindset ideally exists in all of your patients, including in a primary care setting the healthy ones who are the most numerous. “My kid’s doctor” is an even more potent concept because the one mindset governs multiple patients. By deliberately a patient to another doctor for a relatively routine condition, the clinic erodes that most valuable asset. My doctor becomes one of my doctors, then just a doctor. My is everything; unnecessary referral is poor business practice because it functions as an invitation to leave and not come back.
How Much Money Leaves With the Patient
Referring a patient out for allergy testing, especially if treatment follows, leaves a lot of available reimbursement uncollected. Primary care skin prick allergy tests fall under CPT code 95004. As of January 2026, the CMS “national payment amount” for that code is $3.67 per unit. For a comprehensive 80 panel test, therefore, reimbursement under that guideline runs to very nearly $300 with commercial payor reimbursement typically 20-30% higher still (to say nothing of the visit). Such typical reimbursements represent four to six times the material cost. For finer detail, we’d be delighted to send you a detailed business case using CMS reimbursement figures specific to your particular MAC Locality.
The dollar figure you’re leaving on the examination table for one patient referred out represents several times that figure when accounting for the several additional potentially allergic patients your clinical process didn’t detect. The referral model for allergy is thus not only a medically detrimental option, it’s also an extremely high opportunity cost.